Other people don't care nearly as much you think.

If I want to see a movie, I see a movie. If I want to travel, I travel.

Now with my last vacation I happened to be on the same continent as a long term friend who I hadn't seen in very long time. We met up, and it was like we were hanging out in college again.

But I had a great time traveling solo before that.

If you have the mentality that you need to be around your friends constantly you'll never try anything new.