What is it about fixing/modding your bike yourself that makes it so satisfying almost regardless of what bike it is?

Just spent two hours fixing a leak on the two stroke pump and making a home made mudflap for my Yammy V50. Fitted a waterproof plug cap and new HT lead the other night, can't wait to take it out in the next storm to see if it still cuts out every other mile ; )

Next up are some 'new' shocks in attempt to improve the handling from absolutely atrocious to appalling and counteract the super dry statement on my last MOT certificate 'slight loss of damping effect in rear shock absorbers'. They are 42 years old after all