I like the resistance that carpet gives. I have lots of friends that complain about the kids moving all of the furniture around the room including tables and chairs etc because it moves so easily. Carpet is much better at anchoring things. For those just learning to walk it supports their falls better. My playroom is in the basement so carpet on cement floor. We went with a less expensive but dense pile carpet but upgraded the underpad for warmth, it is made for moisture control in a basement too. Didn't bother doing the wood/rubber subfloor with the moisture wick pad.