Should i keep my new 2008 nija 500r or buy a bigger bike?

I bought a 500r not to long ago. I paid almost $6000 for it new. Now it has 4000 miles on it a scrach on the bottom of it and a bent roator with bad pads. Yea, it's my first bike. I love riding it, I can't do wheelys on it. And other bike on the highway...

are slot fast than mine. I've been looking at other and used larger bike are cheaper than a what I bought mine for. I think I made a bad choice buy a new bike for my first.
But if I sell try selling this bike I don't know how much I'm going to get for it now.
It be like throwing my money away. But should I try to buy a bigger bike? And sell this one?

Well, getting a bigger bike isn't so much want, so much as it is an ability to ride one. I mean, I'm a small guy and inexperienced; if I tried to ride a Yamaha R1, it would throw me off like a bucking bronco! Bike like that has so much power, you'll pop a wheelie without even trying- sometimes when you don't want to! I mean, I live and die by Kawasaki, so maybe you should upgrade to the Ninja ZXR.