of course u2 is one of the greatest "real" rock bands to date, lasting for as long as they are is hard to find, they never sold out, sure bono is a little weird but he always has been, and the edge is just one of the best experimental guitarist out their(along with tom morello)
i realize that their more recent albums can't compare to joshua tree but the point is the songs were still great and they never went dull, they keep on with the hits...as joe dirt said "keep on keepin on" thats what they're doing
plus my mom has been such a big fan for like 18 years, i grew up with u2 and they kick so much ass