I had a buddy who would chronically buy gear from music stores on credit, use the gear for a while, and then sell it at a loss, all while only having made the minimum payments and still owing the lion's share of the purchase price. He did this over and over and over again for years, sometimes buying the same piece of gear that he had sold a year or two before for the second or third time.
Never saw anything like it. I would talk to him about it and tell him how crazy it was and he would say, "Yeah, you're right. I just gotta be happy with what I have and pay it off", and then a couple of weeks later he would have a new bass... It was way beyond normal. It was like an addiction for him. Consumer therapy at its worst.
Haven't seen or heard from him for a year and a half now. Last I saw him, he was having a hard time finding work in Edmonton, so I told him I could get him a good paying job at a potash mine in Saskatoon and that he should come here. He did and I put him up for free, fed him, put gas in his car, etc, etc, for a month until he started his new job. It was a very easy job. All he had to do was wipe the dust off pipes with a rag as a painter followed behind him to paint the pipes with epoxy paint and it paid him $26/hr. He quit after the first day and I got pissed off at him. The next day when I got back from work, he and all his things were gone. Tried phoning and texting- no response, so I guess I'm dead to him now. Funny, one of the things he griped about the most was people with an overly entitled attitude, lol.