I care what people think of me, of course I do. Pretty much everyone does to some extent, but I don't care enough to ever attempt to be someone I'm not and it's been that way for pretty much as long as I can remember.
I will admit that I went through a brief stage when I was about 13 when I tried to listen to the same music as my friends and watch the same shows but it didn't take long for me to get bored and continue on my own path.
I don't have the most insanely eclectic tastes out there but I certainly didn't have a lot in common with the majority of kids at school. I didn't know many other readers, I didn't know other kids who listened to 60s rock (my music of choice in high school) and I didn't know anyone with the same sense of humour I had.
All of these generalisations exclude my best friend at the time (who happens to still be my best friend now, but alas, we went to different schools).
Despite all this, I never remember feeling like the odd one out. I had plenty of friends. I was never lonely and I cherished my interests, even when I couldn't share them with other people.
It's all different now. The internet is a much stronger source, you can find friends from all over the world who will share your interests, no matter how left of center they may be.
That's great, but If you're a kid reading this and you don't like the same things as everyone else around you, don't worry. Embrace your differences. They make you who you are. Being different doesn't have to be a bad thing. If you like who you are, others will too. Stay strong and be proud.