I've pushed to have my last name as part of the baby's last name and my husband is totally on board. Both of our names end in "son", so it's a bit long, but we've decided it's the only way for us to both feel/be included! Additionally, we've decided to let our kid (maybe even encourage our kid) to drop one of the last names if he ever decides he wants to.
Here's my question: right now we are not planning on using a hyphen, but people have said that may get confusing on legal documents. Example: Michael Christopher Johnson Peterson
Note: I don't want my name as a second middle name...it will be the first part of the last name.
Re: Hyphen or no hyphen
I also want to note that the "typical" way to write a double last name depends on the culture you grew up in and there's no world standard. Neither hyphen or no hyphen is wrong.
ETA: but, my friend who did both last names for her son without the hyphen does often deal with people using only the second last name (her husband’s name), so the hyphen might help prevent that.
Me 34 DH 34
Baby number 2 due 4/11/20