Most of the time I fall asleep with my socks on so that's one of the reasons y I've gotten so used to and prefer to wear them to sleep. Then again I get cold as hell in the middle of the night and not a huge fan in direct contact to carpet or wood floors and definitely not tiled floors.
No! How do people do this? Even when I've gone to sleep wearing socks in stupidly cold conditions (camping in the snow etc) I've never woken up still wearing them. My feet get claustrophobic. I find it really restrictive to wear anything at all in bed.
Your parents probably instilled it in you so it's a repressed memory that comes out when it's bed time. Then 5 mins later you realise how silly and pointless it is when they are already undercover so you take them off