My parents had credit problems, so when I was growing up, they told me to stay away from all things credit and never told me how it worked.
End result of this, I entered the world convinced that credit cards were evil and didn't have a shred of credit until I was 20, when I realized that you MUST have credit in todays society. You need it for cell phones, to buy cars, houses, everything. So I began trying to create credit, but since my parents didn't teach me anything about it, I made some mistakes and had some blemishes on my record before I figured out how it all works.
I now have good credit and everything except my house is paid off, but I will not make the same mistakes my parents did. By ending any conversation about credit before it started with an admonishment of 'Credit is evil", my parents did me a disservice. There are positive and negative aspects to it, and I hope I will be able to do a better job preparing my kids for the realities of finance. Saying 'credit is bad' is just bad advice.