We have a crib. I am also very glad we did not pay for it (gift from MIL
). I think we used it for a total of 4 months when the kids were infants. I used it more with DD, particularly when I broke my ankle when she was 5 mos. old... but I could have used a borrowed pack-n-play or some other fenced in type thing just as easily.
My kids were climbing out of the crib by 6 months, so it was even more useless then then when they were co-sleeping little babies. Useless and dangerous! Forget the suggestion someone gave me to turn the crib upside down to keep them in
What we did when the kids were ready to move out of our bed (or to take naps alone) was to buy a twin bed and put the matress and box spring on the floor in the corner against 2 walls. We got one of those rails for one side. It worked great
They never fell out, even at 7 months. They could climb in and out with ease, and seemed to really enjoy the freedom to get out when they wanted to. It kept me from worrying that my little toddler would fall on thier head trying to climb out of a crib, and I think it made them more comfortable than being in something that seriously looked like a cage. If you have an early, motivated mover, i suggest strongly getting rid of the crib or converting it into a toddler bed!
DS started sleeping by his own accord in his bed all night at 2, and DD... well at 5 she still comes into our bed sometimes