[Why does he feel like he's teaching a science class? And why does that BOTHER him so much? Oh god... he's not actually a high school science teacher, is he?! Christ, if that's the case then he's better off an amnesiac!]

Because I'd liquify if I hit anything at over two hundred feet per second... Now, I GUESS I could put a ring of repulsors facing inward to make it more stable, but that won't work for bodies at any amount of speed, and it's not going to help at all I plan on making a portable version.