I rode a lot around town as a kid, until I got my driver's license. Then, over the next 20 years I gained over 120 lbs. Almost two years ago, I bought my first "real" bike as an adult as part of my weight loss attempt, and I was instantly hooked.
I've now totally destroyed the drive train on my $225 cheap bike by putting 3000 miles on it. I've replaced the drive train on my recumbent from similar miles, and bought a new LHT in January and have exceeded 550 miles, so I'm well on my way to wearing out parts there too.
I love riding!