Finally, the primary reason.
If you look at the chart below, you'll notice, peak power is at a very high RPM, 7,900 to be specific. I get soft fuel cut at 8,000 and hard cut at 8,200. Spinning it to 8,500, even though power will be tapering off, will still result in faster acceleration than having to switch gears up at 8,000.
So this is all fine and dandy, however, I'm taking steps to build another motor with more RPM capacity and a bigger cam, which will shift power upwards even more, probably peaking around 8,400. On that motor I definitely want to be able to spin to 9,000 or 9,200 to maximize the power potential.
My goal here is to get to 300 at the wheel, or as close to 300 as possible with air filter fitted. My rocket is turning into the toy bike instead of the daily, so, it gives me the luxury of being able to do exactly what I want with it, and I want it to be retarded fast and naturally aspirated.
300hp at 850 lbs (weight of bike and me), results in a predicted ET of 8.26 and a trap of 163mph.... Sounds just about where I want to be
Oh, and the WHY question that some will ask... because I can, literally no other reason.