What happened or what did you realize to make you make the decision to stay home? I'm back at work now and go back and forth with working or staying home. Just curious what helped you make your decision.
I'm sure this has been asked a thousand times so if you reply, thanks, I really appreciate it.

Re: If you went back to work before becoming SAHM...
I'm back at work now, but plan to quit in Oct when LO#2 is born. Daycare for 2 in my area is almost as much as I make. (And I work in Finance with a Master's degree!) I plan to go back to work when my youngest (possibly a future child(ren) after LO#2) reaches grade school. Good luck with whatever decision you make!
I never actually went back, but only because I took a year leave of absence from my job. I planned to go back, signed up for daycare and continued to assist with my job from home at times, but over time, I realized a couple of things.
1) Every dime I made over and above DH's salary would be taxed at 40-50% between state, federal, and FICA tax, so even though I made a substantial portion of our income, I would not actually add significantly to our lifestyle.
2) DD slept from 7 pm until 7 am, and still does. She would have been in daycare from 7:30am to 6:00pm, leaving only enough time with her to get things done. No time for playing with her during the week.
3) DH got a new job while I was on leave making a substantial amount more, so any monetary benefit I would added would have been for things that I place a low value on (Vacation house, bigger home, when we already have a nice house, really nice cars, private school)
4) We would have had very limited family time on weekends with both of us working which would have added to the stress we already felt with just DH working.
5) DH did much better at his job with me at home to take care of things. (We also have rental property, so that took some of DH's time. I could handle the bulk of that stuff now, though I do not show properties to tenants with the kids, and DH still does that. I now do all the maintenance)
6) DH did not participate much in childcare for a variety of reasons, the largest being that he didn't have time, so all the work would have been on me. This is an important reason. Most of the successful, happy two income families I know have significant division of labor. This was just not possible for us.
Those were my main reasons for changing my mind.
Seriously, the ONLY reason I was working was to get out of the house and have adult interaction. I LOVED DS's daycare (New Horizon) cause he learned so much there! My paycheck was literally paying only for the gas to my car, daycare, and my lunch. That's it. We didn't need the income, it was solely to get me out of the house. I've been working since I was 18 and to quit cold turkey at 26 was a bit much for me.
What finally made me decide to be a sahm, was when I had our second son. The daycare was to much for what I was making, so I officially became a sahm in 2008. Been one ever since.
Once all three boys are in school full time, I'll get a part time job just so I don't go nuts staying home by myself.
I went back to work after DS and then decided to stay home after DD was born. There were a few factors-- the cost of childcare for 2 was insane to me. Also, it was hectic enough getting one out the door to DC and then spending the evening rushing around getting ready for the next day. I wanted more quality time and less rushing around.
Bottom line for me is that I always wanted to SAH and be the one doing the primary child care, so we made it work. I will go back to work at some point, I am sure, but right now I am enjoying the motto "they are only young once":-) I don't regret the decision at all and have never looked back.
Daycare costs in my area are out of line with salaries, so daycare for one would have substantially exceeded my income (by several hundred a month). DH has a flexible schedule, so we tried me working both p/t and f/t around him, but the stress it put on him was too much, so we're working on getting him through graduate school asap and my contribution is that I take care of everything home related so he can work as much as he needs to. It's working far better from us than spreading ourselves thin to have a higher income.
Honestly, I always saw myself staying home when I had kids anyway, so I'm glad it worked out this way. I'm not sure if or when I'll go back.
I went back to work when DD was 16 weeks. I lasted from May 1 until Sept 1. I found out I was pregnant (whoops) the beginning of June and miscarried in August. I was travelling a lot and I just realized there were more important things in life than money. We cut back where we could and I have been home since.
Cam 6.6.10 - Autism, Global Developmental Delay, Mixed Receptive/Expressive Communication Disorder
I got a one year maternity leave with each of my kids. I decided to become a SAHM when my kids were 2.5 & 4.5 years old. Working with one kid was easy, IMO.
But with two, life just became too hectic. I was not really happy once I went back after #2, and neither was DH. (I was working 4 days/week).
When we had trouble finding care for my older DD for half day kindergarten, we decided that I would stay home for a while. I'll stay home for 3 years until both kids are in school full time.
My Chart My Nest Bio