People very often take money in debt, and then on duty can not pay off. Very often because of an error in the calculations, or their partners fail.
Well these are their problems, I'm sure that the one who wants to earn - earn, and then give on the ass to bad partners. To those more so do not))
I think that when you earn enough money, you simply will not want to dirty your hands about these people. The fact is that time passes and you do not need to keep old grievances.