Eu: Most of the people I know use debit rather than credit because we can manage our finances.
I also like the fact that using a CC comes with better buyer protection than debit cards.
"I use debit because I can manage my finances" reads as "I don't trust myself with credit." If credit is a trap you have to avoid, that's not the flex you think it is.
It's a tool. Some people use it. Some people are scared of it.
Business model of banks in regard to CC are preying on people not paying it all in full for various reasons.
It makes a lot of sense to avoid them if you know you are incapable of managing your finances, though.