Personally i got benefits from those power-rangers (see my post history) and as i said before: DT is not a "power", it is a service those guys are giving (for free) to the community. Tagging, investigating, helping, escrowing: they make our life better here and like me, a lot of users had successful trades because their contribution.
I think that you do not understand how the trust system works. I am not even sure where to point you to read up before participating in these types of discussions --
this might be a good place to start, but is far from an inclusive list of what you should read.