B.S.
Like all the other moms said - once they can climb out they will. Mine is pushing 3 and climbs out all the time but wants the side up to sleep so we are not moving him yet. He has a toddler bed that we will set up soon as it is closer to the floor than a regular bed (and they are pretty cheap - and extend the life of a crib mattress). Make his room safe - try a gate - lower the side - but don't worry - he will be fine. Someone told me once that they put a baby door protecter on the inside... best of luck.