No way! I didn't think people existed who didn't like Nirvana! Ha ha.... Seriously though nostalgia definitely plays a part and whatever was playing in your house or friends houses growing up plays a apart in the music you naturally deviate towards..

Great shout on Vampire Weekend, I have been listening to these guys for years and love their sound, definitely more up beat. I'm a bit unusual when it comes to music though, as I will listen to pretty much every genre. The hardest ones to warm to for me would be Country and Western and some crazy non-structured jazz, but will still listen to either, if the song is shite, I wont listen to it again, but if it's good it'll get another listen and might make the playlist :)