I've only bought 8 bikes in my 20+ years of adulthood, and still own 5 of the the frames. All of them (so far) did the job I bought them for at least as long as expected -- except for one.
Up until 2000 I'd been riding a full rigid mountain bike for years, and had used it for everything. Then I made a commitment to start riding a lot more, and decided I could justify a few hundred bucks on a new bike, in this case a Rockhopper Pro. Good bike, fun to ride, no complaints at first. After bit over a year and a couple thousand miles of riding, I took it on Cycle Oregon. 350 miles of chip sealed roads later, I realized that (despite the suspension fork) I could not stand the constant road buzzing finding its way up through the beercan sized downtube. Sold the Speshy and picked up a nice buttery steel cyclocross bike for road riding. I didn't feel that the mountain biking I was doing at the time really justified suspension, so I went back to my old full rigid for a while.
The 7 bikes that did fulfill their original mission (and more):
- 1985: Raleigh Pursuit roadie. Rode it 8 years, then gave it to a farmworker who desperately needed transportation.
- 1993: Fuji Sundance MTB. Held up for thousands of miles, converted to SS in 2002, then died in 2003 of Ovalized Headtube Syndrome.
- 2001: Bianchi Volpe cyclocross bike. Many thousands of miles, also converted to SS in 2002, then back to gears in '04. Still ride it.
- 2002: Older KHS OXII full rigid. $50 frame to temporarily replace the Fuji. Only bought it to keep myself on wheels until I'd saved up enough money to go disc (and, as it turned out, 29"), so I only rode it for 8 months (including my excellent desert camping adventure with Sparty). Still have it. Wish I could figure out a good use for it, because it's by far the lightest and smoothest riding rigid MTB I've owned.
- 2003: Surly KM. Intention was to ride it for a year or two, then upgrade to a lighter frame with EBB. 3 1/2 years later, it's still my commuter and kid trailer puller, and sees more mileage than my other bikes combined. Go figure.
-2005: Vulture. Best handling MTB I've owned. Love it.
-2006: Lenz Leviathan. My first full boinger. Love it too.