Cycling has given me, and allows me to maintain, a certain level of fitness; it has allowed me to raise lots and lots of money for good causes while having fun and riding a bike; I have seen and explored places that I never would have without the bike; and, as mentioned by the OP, it has given me an entirely different set of cycling buddy friends who understand the language of butt cream, chamois, cassettes, cranks, headwinds from hell....
2001 Trek 7500 FX, converted to a hauler - Serfas
200? Marin hybrid - Selle San Marco
2004 Trek 5200 - Avatar
2011 Trek 6.2 Madone - Ruby