DS will be 2 in 2 weeks. He has never shown any signs of trying to get out of it. The only thing he does is lift his leg up on the top rail when we come in to get him up, but he doesn't even try to hook his leg over the top and he doesn't do this every time either. When we put him down for a nap or the night, he'll bop around in the crib for a bit, but has also never tried to climb out then. If he ever tries to climb or (or is successful at it), then we will go ahead and make the transition, but what if he never attempts? Do we just do the transition when DH and I are ready or when he's just too big for the crib? Are there kids out there who don't try to climb out ever?