Originally Posted by
Jiggle
Well no, not just for aesthetics reasons. He will be increasing the value of his labor by learning new skills. This will lead to increased confidence in fixing his own bicycles which will save him money down the road.
He will be learning new skills, but those specific to building a bike are much less often needed. I am not a believer In trial and error being an efficient means of learning. There are multiple ways of doing something wrong, so making one mistake does not mean you will avoid others. The best route is to learn the correct method in the first place.