For those serious riders, how often do you maintain your bikes? For me, I can't find the time so I usually ride it to the ground 
- The daily mountain bike: front disk brake is rubbing for the past 6 months and nothing is done yet.
- The back-up mountain bike: front fork leaks for the past years, I have all the parts to rebuild but nothing done yet, I ran out of spare mtb tubes, need to drop by performance bike shop today to get some tubes.
- My Road bike, got a flat on the last ride and also ran out of spare road tubes
And the mtb shoes cleats are loosen after some 8 years.

- The daily mountain bike: front disk brake is rubbing for the past 6 months and nothing is done yet.
- The back-up mountain bike: front fork leaks for the past years, I have all the parts to rebuild but nothing done yet, I ran out of spare mtb tubes, need to drop by performance bike shop today to get some tubes.
- My Road bike, got a flat on the last ride and also ran out of spare road tubes

And the mtb shoes cleats are loosen after some 8 years.