Now that I'm a little (ahem) older, I'm not breaking stuff much. I used to ride at 220 pounds and about 1000 miles per month, but I think the destruction has to do with the way I ride, too. I rode off-road motorcycles for 10 years and learned to stand back and let the rear wheel absorb everything. I broke a bunch of expensive motorcycle parts, too.
I also thrash the bike around a lot when I stand on a climb, and I think this is hard on wheels.
Stapfam, there is no paint on the stays of my old Cannondale where my heels rub, that's with extenders.
Oh, yeah, on my last credit card tour, my bike weighed about 55 pounds.