Really? So...new parents shouldn't be allowed to ever have sex is what you're saying. That makes literally zero sense...

You don't have much experience with kids, do you? Kids cry all the time over the randomest things. It's not reasonable to expect parents to be constantly selfless. Sometimes a parents need is more important than a kids need- there's a decent chance the daughter was only crying over a mysterious creaking noise or a toy falling off the bed. A certain amount of self care is necessary in order to be capable of taking care of someone else. People need some relaxation and fun in order to function properly. The husband certainly overreacted with the serious accusations that she's interrupting the sex on purpose, but being upset is probably justified.

Being upset is justified but I do believe children come first. Even if a child is crying bc he or she is afraid or even something insignificant, you should still check to make sure he/she is okay. After the child has calmed down and went back to sleep, the parents can do whatever. My child's safety is my top priority; my husband can wait half an hour to get laid until she's calmed down. My husband is very selfish in this aspect.