You have a valid opinion. However, some debt can be good if you are smart about it. For example I have a 15 year mortgage with 2.65% APR. Lets say I have enough liquid cash to pay off that mortgage, but on the other hand I am 90% sure that I can earn 4.5-5% minimum every year with average of 7% by investing. So by keeping the mortgage (debt) with a low rate, I am actually increasing my net worth by 2-5% per year as opposed to having no debt.

So while I agree life without debt is the best, there are some reasons to keep debt.