I think it all depends how you use your electric motorcycle. I use mine for daily local transportation and for utility purposes to replace my car and because it is much easier than starting up one of my IC motorcycles and driving a few miles to get somewhere and not even being able to fully warm up the engine or recharge the battery. I can go three miles to the grocery store, another half mile to the hardware store, 8 miles to visit my mother, another three miles to ride to the mall, a couple more miles to hit the drug store, etc. If I did all that on an IC motorcycle in one trip, I would be creating an acid bath in the crankcase and the battery would be flat by the time I got home. If I was still working, I would be riding my Zero every day a distance of 10 miles there and 10 miles back. If I need to go over 80 miles, I then ride one of my IC motorcycles, such as I will be doing this week as I ride up to the BMW national rally in Salem, OR. A larger battery would give me more options for recreational riding and if the bike weighed another 80 pounds or so it wouldn't bother me any more than does my current stable of 500 pound bikes. Actually, I prefer a heavier bike for its more stable ride on the highway.
So, I really don't need fast charging as I have no intentions of only owning an EV for all of my transportation needs - especially consider the cost of the fast charging system. Finally, unlike the gas station industry, at this point in time, you can not depend upon charging stations being both accessible and operational. The infrastructure just isn't here yet and it will likely take many years before you will be able to depend upon finding a charging station on every corner, having it properly maintained and in working condition, like you can with a gas station.