Kind of a serious question...
What do you tell people when they mention the negatives of having credit cards?
I have co-workers here at my job that are somewhat light churners and always ask me for some advice on what card to go for next. I'll give them some suggestions, but occasionally I'll have another co-worker chime in with "credit cards are bad" and "I can't believe you guys pay those crazy interest rates." I'll mention that you don't pay interest on credit cards if you pay your balance in full every month but I don't think they quite get it.
It's also the same with my family (not married). I never ever share any financial info with them about how much I make and they see me traveling all the time. They don't quite get the idea/process of churning and always give me a mini lecture about compound interest and how it's bad for you.
Anybody else been in this situation?