Started riding a year ago, went from a Ninja 500R to a CBR600 F4i to an SV650S... ~7k miles, 1 track day, no accidents (knock on wood). I would suggest riding well within your limits on a bike you are comfortable with. You can learn new things on the street without going into triple digits. Also, ATGATT (all the gear, all the time) - no matter if you're going 2 miles away or 200. Accidents happen and sometimes you can't do much to prevent one, so better be prepared. Also, I'd always go with a smaller bike if given a choice. Lighter and less powerful = easier to control = you learn faster.
I have an old Gixxer(93) and an Evo IX with mods on corn and i must say I enjoy my Evo far more :rockon:
Motorcycles are the antithesis of a "transportation appliance" like the Prius, where beyond staring at the fuel economy graph there is basically no driver involvement. In fact, I'd venture to say most cars under $50k fall into this category. People get in, start driving, and zone out - because you can get away with that in a car. On a motorcycle, on the other hand, one mistake can cause you some serious problems. Not just your mistake, but someone else's - you lose, no matter whose "fault" it is. That fact keeps you on your toes, in the moment, all the time. That means you're focused, paying attention, and constantly engaged with what you and the vehicle are doing. That also means your mind is not concerned with 20 other things while you drive, as in a car. There are nowhere near as many barriers in the connection between man (and woman) and machine as with a car - especially a transportation appliance. This raw, free connection is why riding a motorcycle is like moving meditation - an experience which very few (if any) cars can ever come close to feeling half as good. To paraphrase Mr. Pirsig, driving a car is like watching a movie, and riding a motorcycle is like being IN the movie. Go for it! -MKL 2008 Prius Touring #6 2009 BMW R1200RT 1996 BMW R850R 1977 BMW R100S 1973 BMW R75/5