It IS the same when you get older if you hang out with those sorts of people but there are ALOT less of them.
So you just keep doing your thing, working out, eating good etc and you will find others with the same interest.
Actually by the time most people are just a few years older than you they are physically in VERY poor shape.
Keep doing what you are doing. Not always easy as most of us older guys have found BUT when you are 30 you don't look fat, out of shape and 5 years older than you really are.