Until what age did you put your baby in a crib/ playpen (whether to sleep or to play)?

We only used the crib for play time purposes and not really for overnight sleeping. I allowed my baby to sleep during syesta in the crib if I need to do something within the house but with close supervision. When my son learned to climb to get out of the crib, I immediately let him stop using it. I used play yard instead because it has higher railings.