Well, bootlegs are unauthorized copies of a live show performance which the abdn dont know about/profit from and so by selling, you are ripping the band off.
People (like myself until a few months ago) traded for enjoyment, i got a hell of a collection but stopped caring. I liked hearing live shows, i didn't care abouyt getting money from it. If you profit off a band by selling their live shows. You are nop better than the people who buy Hatecrew death roll CDRs or Buy fake teeshirts from vendors outside clubs.
Its also illegal incase you didn't know.