Somedays I'm jealous of runners. Well you ask why be jealous?
NO Frickin Driveline Maintenance - I spend at least 10 mins after every ride cleaning the driveline on my bike and once a month at least I spend at least an hour fully cleaning the chain, lubing it, cleaning the cog set and the chainrings up front. Maybe all told closer to 2 hours. Also clean and lubing the derailers various parts.
Cleaning the bike in General - During the winter it's really just been dry cloth wipedowns and removing the dried mud off all the major components, another 15 minutes after most rides, and sometimes more.
Storing Gear - Helmets, Shoes, Boots, Jackets, Socks, Tights, Shorts, Parts, Lights, etc.
Camelback - Cleaning out the damn bladder is a pain. Reloading consumables in the pack (Gels, Bars, GU, Supplements, etc)
Washing the Gear - Runners have a similar range of gear, so I'm not so jealous here. Though the nuts who run year round in the thin shirts and tops do seem to get one over on all of us.
Bike - Jeez, I've upgraded major components on my ride this year including lights, gps, wheels set, tires, cogset, brakes (front and back).
Argh! On the other hand I love the advantages of bikes. I cover a lot of ground and the wind of motion can be nice, sure on mountain biking I can average anywhere from 6 mph to 9 or so. On trails I can run anywhere from 13 to 18 mph. Zoom!
My feet and knees take a LOT less pounding damage. I enjoy running somewhat but after 5 miles my knees are miserable these days. Though biking does make my knees hurt in a different way, I think I need to raise my seat.
I can frickin COAST! HA!
And really, I don't MIND the bike maintenance, it fills my need for tinkering quite well, its just the time to do needed work is sometimes a bit tough to find, and runners just pull on gear and shoes and can go. In the warmer months its a bit better but still mountain biking is way to gear dependant. I plan on being out west in april and I want to ride, but that means probably at least packing my helmet, gloves, shoes, and pedals. Plus maybe other gear. We'll have to see.