Why is liking the song, Smells like Teen Spirit, frowned upon?

I'll get shot down for this and that's fine but I've never understood the love for Nirvana. Kurt seem like an incredibly cool guy but their music was so incredibly mediocre.

@NigelDoes: I was the right age at the right time. It suited the "aesthetic of failure" that was the thing then. I wasn't into them, though, Primus was much more my thing.

I do remember where I was when I found out that Cobain had killed himself, though, waiting for the bus on the corner of Windsor St and Quinpool Rd in Halifax with snow on the ground. I remember being sad but not terribly surprised.