I get the idea of trading machine's but some of us don't always have something to trade or what we have is considered players junk nobody want's to trade a nice well kept machine for a players beater.
But when the economy is going great and everybody's working 40+ and everything peachy cash isn't a problem. When the current state is some working almost full time,some working 2 jobs to just cover their tracks cash isn't just laying around to get that next machine. So your tired of the current line up and your looking for a change trade can be your best option.