Hi, I'm going to be the a##hole that comes in here surprised that anyone would talk about this show.
Unless you're having nostalgia for your youth ( I guess people that watched this at age 7 would be about 23 or 24 now)
You'd be surprised by the size of PR's adult fanbase. The show might be marketed primarily at young kids, but some of the sesaons also, tonally, appeal to an older audience, most of which watched the series as kids and has stayed with it - to some degree - over the years.
BTW, to the people who may have given up on the franchise after its early seasons, you should give it another chance and check out the later seasons, in particular the following:
Power Rangers in Space
Power Rangers Lost Galaxy
Power Rangers Time Force
Power Rangers Dino Thunder
(not personally a big fan, but enough of the fandom likes it for me to reccomend watching it)
Power Rangers SPD
(again, not a big fan, but it's popular with the majority so I'm again recommending it)
Power Rangers RPM