Eh, I have debt, but I keep it at a level that is entirely manageable and not detrimental in any way. Actually using a credit card is good for building and maintaining credit score, as is having a loan of some sort. Given, you don't have to sit on a balance in a card to build credit, just have to use it. Keep it under 30% credit utilization. I personally pay off my card entirely every month unless I've intentionally used it for something larger that I planned on paying over more than a month on. Car loan is similar, but obviously not something most can pay off quickly, but if I have extra income from a bonus or something else, I'll put more toward it.