6'6 here and I rode a ZX6R fine.
I haven't read this entire thread, but if anyone is talking about getting a 600cc+ sports bike as their first its a disaster waiting to happen.
My first bike was a 2001 R6 Champions Edition. I'm fine.
Just respect the power of the bike and don't be a retard.
Currently have a 2002 CBR600 F4i, I treat it like garbage and it runs great. Gotta love Hondas.