I totally agree; after working on bikes for some years, I have come to believe firmly in the KISS principle: Keep It Simple, Stupid.
I was out riding with my wife one day when my bike began to buck, and surge, and generally act up - and then it died. Pulled off the road, checked the gas, tried the ignition - nothing. We weren't too far from home so I walked back the mile and a half to the house and got my truck, and drove down to pick it up and see what was wrong with it.
Wife is giving me 'That Smile' - you know the one. The Cat-Got-The-Canary one..."Wait, try it now," she says...I hit the starter and it starts right up; purrs like a kitten.
"Wtf...." I said...
She says " I tightened the battery connections."
I learned a valuable lesson that day. *Most (not all) problems are usually due to something simple, and simply fixed.
Nothing teaches like experience.