Get a bike? Yes. Get a GSXR as a first bike, No. $100 a month on a brand new gixxer? are they financing it for 10 years, or will the payments go up later (not a good thing, but lots of people buy into this type of loan) Insurance? Just thoughts.. if you save on gas, but have higher insurance, and a payment, are you really saving? You will be paying AT LEAST $25 a week for the bike, + insurance costs + gas in the bike, and you still will drive the car more than the bike, almost guarenteed. I lived with nothing but a bike for 3 years, I look back on those years and am glad I did it, but NO WAY I would live with just my bike now.. ('98 996 Superhawk). Rode in rain, snow hail hot cold, everything... not now. weather gets iffy, or I need to carry very much, or wife wants to go...etc.. got that big 'ol supercharged explorer out there in the driveway...
A new bike is ok, but if you can work on your 'stang, you can work on a used bike.. they are the same, just smaller.. lol