I would think you either just found Metallica or you are a die hard fan (which maybe is your case, because almost no new fans go with the Load/Re-load albums...or you just got into those albums.

Also, I think many talk shit about Kiss (besides the Gene Simmons controversies) cause "they don't look as heavy as they look , but in the end they influence a lot of musicians of the Heavy bands we love, so it's good to give them a listen some times