I sympathize with this. Lots of parents are vociferous morons, because lots of people are morons and becoming parents does not fix that. But: There is a real difference, at least for many people. Your brain rewires itself to be hyper-vigilant about child safety and child harm. I can't watch TV or movies anymore that involve harm or the threat of grave harm to children, but these wouldn't have bothered me before. When I enter a room, I subconsciously scan it like Jason Bourne if he were a toddler's bodyguard. Slippery surfaces? Sharp table corners? Unfenced stairs? I've compared notes with friends and this is a common, if not universal, change in parents. They spend a lot of time thinking about child safety.