Hahaha I was confused reading these, I thought I'd clicked on someone's answers!
2. I think people get offended way. too. gd. easily.
Someone asking why you don't want kids isn't the worst thing ever. If you take the idea of being happy seriously, you won't be bothered by these things. End of.
3. I don't think it bothers me personally when people feel entitled (of course I feel entitled to a lot). It depends on what happens as a result of that entitled attitude, and whether that's good or bad, yanno? Having a sense of entitlement is... definitely a modern trend, of course, and I'd say it's a sort of stunted, inflexible way of getting what you want. It sort of chars the character of people with that attitude. Whether it disadvantages them materially is another question, one that doesn't press on me right now because I'm not being deprived of anything in particular by the entitled attitudes of others.
I don't think senses of entitlement are inborn. Your brain adapts to the way its needs are fulfilled. If it's used to them being filled basically automatically, it will feel deprived when that automatic supply is somehow less accessible. Shrug. It can probably be unlearned too.