I know a lot of Goths aren't very fond of mainstream culture but as far as a I can tell most of them aren't going to stop liking something just because its popular. That just seems stupid. In my opinion a song is good whether it is popular or not. If The Sisters of Mercy suddenly became the coolest thing ever does that mean that every alternative person that liked them before is going to just stop listening to them. No, only the people who care about such trivial things as not having anything in common with mainstream culture are going to stop listening to them. The rest of us are going to continue on blaring their favorite songs as loud as they can.
So this brings me to an interesting thought; why is something being mainstream considered a bad thing. Is it because you now feel like your personification as a unique individual is going to be jeopardised if you happen to like Ke$ha? If it is then I'll let you in on a secret, anybody that matters is not going to think of you any different for liking something popular.
I personally am fine with the mainstream. People who fall under mainstream do because the things they happen to like are mainstream, so really its no different than being alternative because you like weird and different things. If I like a mainstream song I listen to it and I do it with pride. If I like a mainstream style I will follow it. Hell, today I went to school in ripped jeans, Ugg knockoffs, and a light grey striped cardigan and I thought I looked cute. I looked completely normal with the exception of having pink hair but I still think I looked awesome.
And just to make this worth your while I will throw in a bit of advice that most people should already know. Life is not going to be very fun if you spend all your time worrying about being unique. Just live your life to have fun and do things that make you happy. There is really no point in being a unique individual if you can't enjoy yourself. Well there you have it that is the end of my rant.