I'm probably going to get some shit for this, but I still like KISS. Keep in mind that I was in elementary school back during their 70s heyday, and I was drawn to their super hero image. Before you ask, yes, I did have the Marvel comic book, and I also watched "KISS Meets the Phantom of the Park" when it was aired on NBC in October 1978. Back then, I thought it was the second greatest movie ever made, after "Star Wars." Yes, please feel free to laugh;)
Now that I'm a little older and wiser (although the latter claim is still open for debate), I now realize that KISS was, at their best, a musically mediocre band with a clever gimmick and marketing plan. I still occasionally listen to their classic albums. They did have a few moments of brilliance, i.e. Paul Stanley's great Stones' rip-off "Tomorrow and Tonight," along with his other brilliant rip-off of the Nazz's "In My Eyes" with "Love Her All I Can," and lets not forget Gene Simmons' brilliant bubblegum/glam homage to statutory rape, "Christine Sixteen." Aside from that, their material really left a something to be desired.
BTW, liking KISS is one reason why I like bands like the New York Dolls and the Ramones. Yes, both of those bands are considered to be cutting edge, underground, proto-punk bands, but they also had images that were totally cartoonish, and even at my age, I still like cartoonish rock bands.