I can change a tire/flat, but I've never had to on the road (luck). I live in fear of the day it happens. I clean my chain, but mostly my husband does it. He does all of the bike repairs; we have a complete bike shop, tools, etc which came about from when my son was racing and it was a lot less money for my husband to do the upkeep on his bikes. The only thing my husband doesn't do is work on the hydraulic brakes on the mtbs. We don't have the tools for that and since we don't use the mtbs that often, we just bring it to the shop.
I am in awe of anyone who can do more than fix a flat. To me, it's like I'm trying to do something new everytime I do it.
Well, I did put new tires on my wheels last spring, but i think it took me 2 hours!