Dan,
That is a lot of miles on a bicycle but not as many as I thought it would be. Your training is apparently very controlled and focused on winning particular races.
Wonder how many tires were consumed per thousand miles?
It is good your strength and endurance are coming back.

YES! How many tires and tubes, chains, lube, brake pads, cables, shifters, dérailleurs, cogs, rims, hubs, spokes, pedals, shoes, helmets, uniforms, sunglasses, saddles... and the time involved in maintaining equipment -- I can only guess.

I do know I have had:
6 road bikes (cost about $2,000+ each)
1 time trial bike w/disk and tri-spoke wheels
2 mountain bikes (completely rebuilt several times)
1 cyclocross bike

In return, I have netted a few dollars prize money, some medals, jerseys and trophies, half dozen broken bones, lots of road rash, saddle sores, aching muscles, extreme fatigue, the disdain of every motorist, resentment from spouse, family and co-workers... and a reason to get out of bed everyday!