First, I'm with you on the surprisingly large number of people who are plain stupid on bikes.
The question of self-driving motorcycles is an interesting one. Would I trust them? Yes. The reaction time and ability to process multiple streams of information of computers far outweigh that of humans.
Would I want to? Sometimes. There are times when I'm out riding and it's all about the curves of the canyon. Just like any driving enthusiast, I'm there for the experience. But crossing Wyoming on I-80? Bring it on!
I have no doubt that there will be a Honda Goldwing or BMW R1600 that includes a self-driving mode along with a HUD-based entertainment system in your helmet. And maybe I'll be able to afford it by then. :)
But even i witnessed my fair share of motorcyclists, who just played daredevil on the street.
The way many behave on roads is not acceptable and this goes for drivers of cars and drivers of motorcycles.
Counter question: Would you trust a self driving motorcycle?
So why should i - as a in my opinion perfectly good driver - trust a self driving car at all times?