As a smart person, I see things a different way. There are certain hobbies that are only appeal to smart people, like pure math. But there are a lot of things that appeal to a broad range of people, like sport, arts, music and literature. I think it's very good to get involved in these things because they bring balance and a way to related to other people. In fact I created a "no programming related hobbies" rule for myself.

You would be amazed how much you can relate to other people, and how little intelligence is an issue, once you have common interests. I remember in my Judo club (which was open to the public but based at the university) a guy who wasn't attending the university commenting that he kept forgetting that a lot of the people in the club were really smart and accomplished (it came up because another guy complained about getting hit in the face, saying he had to present at a conference the next day).

That's not to say intelligence isn't an advantage in these other areas of life. But it's not a big deal or something that creates distance from others. People will appreciate your intelligence just as you appreciate their spontaneity, athleticism, kindness or any other qualities.