Well maturity comes in a few varieties...
If you plan on riding like the vast majority of the <25 crowd I see, I would reconsider.. if you are willing to let them go by you, knowing you can blow their doors off if need be, then you MIGHT be on the right track. You will find most cool their jets as soon as they see what it is... No point in taching 100+ on a city street to Tbone a car showing off.
Why did you buy a bike like that? < probably one of the most common questions...
What would your answer be?
Mine was I like the idea of having the worlds fastest production bike sitting in the garage to look at and ride anytime I like.. (it makes me smile every time I think about this)
These bikes are almost pure ego trips and you do not even have to ride it fast to get a charge out of it. (or ride it at all). Knowing what it is should be enough to satisfy most urges. Although there is a time and place for everything, this is not a rocket for busy streets... Anyone that cares or knows about bikes is going to know what you have and what it is capable of anyway and will not need proof
If your answer was to go "carve canyon roads" "Do wheelies" "Stunting" "beating other bikes" then you are on the wrong track... There are better bikes for all these.
Buddies that ride these other bikes can sucker you into riding beyond your skills or that of the bikes. (lighter bikes turn harder and faster, you are on a heavy bike here)
To me, the Hayabusa is an easy to ride motorcycle. The power is very predictable and ample at most rpm ranges. It is not the "zingy" keep the R's up to go problem that the 600cc bikes are. The thing can bite you pretty quickly in adverse conditions. I ride in the rain pretty regular, however the first 5 minutes are treacherous. The bike will spin the rear tire cruising at a steady speed when it hits slick spots (un-nerving).
As a first bike, I am just not convinced that there are very many guys that belong on any superbike while developing bike riding skills. If you had years of dirtbikes or other motorcycles, i would be a bit more understanding but as a first bike of any kind, I think it stacks the deck against you.
Even if you can ride a lighter more maneuverable bike for the first year, I think you would be doing yourself and the ones you love a big service. Riding any bike on the street is an exercise in "attention" and learning to expect the unexpected. You must learn to anticipate what a car driver is going to do before they even think about it. This is easier to do with a bike that is more responsive to steering and brake inputs.
You have a lot of years ahead to "move up" as your skills improve. Hate to see you end them early (happens all to often) I would just really consider using one or two of them to learn about street riding.
My first street bike was a Honda 305 dream (historic piece of crap), my first bike that would run for more than 10 minutes was a 650 BSA That was 30 years ago..