There are far more dumpster divers out there than most people ever know of.
Many of America's d-divers are retired individuals who have a long life of hard work comfortably behind them and are living on a good pension. They take stuff out of dumpsters for their homes, to enjoy giving away, or to sell cheaply. They often specialize in picking up non-working electrical, mechanical items to spend interesting, challenging, rewarding time while repairing the items. Then they either keep, give away the repaired items, or sell them cheap.
Some d-divers are like me. I am living on a very small disability pension but have deep driven desires to do all that I am able to. We somewhat disabled individuals who d-dive are not willing to just sit around the house watching TV, reading good books, listening to music, blankly staring into space, or just wasting away doing little or nothing. We need stuff for our homes, to enjoy giving away, or to sell cheaply. Other d-divers have full or part time jobs. They want to gather useful items for their homes, to give away, or sell cheaply. Some d-divers are homeless, jobless, and living in pure survival mode—they look for anything that will aid them in surviving their tragic situations in any way.
As far as I know, all d-divers, including the some of the homeless ones, give useful stuff to deserving people, institutions, churches, etc..
You never know who that dumpster diver over there rooting through a big-green-magical-treasure-chest may be, or how useful and valuable the stuff may be that they are saving from destruction and burial in one of America's overflowing land fills.
In the parlance of those old double entendre bumper stickers: Dumpster Divers Get Down and Dirty!