One old Latin quote says: "Mens sana in corpore sano!" which can be translated as: " A healthy mind in a healthy body!"
No matter what sport you choose to practice the most important thing is that you are following a path of healthy life style and this brings with it the satisfaction of meeting new people and have great topics about that particular sport and felling much better after every single practice.
I like to run now just to keep myself in shape but when i was a teenager i was playing a lot of volleyball and basketball and really got stuck with basketball as i am watching non stop NBA... i even start to post a lot about it!
Like every other niche of common interest, sport is one that really brings a lot of people together, and a lot of times makes friendships that last for a lifetime!