I feel the same way as you, 3 days after I bought my bike I took it to 140+. I wanna take my bike to the track someday and hopefully won't feel the need to always speed.The biggest issue with myself is that speed doesn't scare me. Yeah, more times than not, I think about the what-if's, but it just doesn't bother me. And every vehicle I've had, I for some reason feel the need to "see how fast it goes", even if I know the supposed top speed. I've had a car up to 163, my bike up to 180 (all indicated, of course). 120+ has been seen so many times in the last 5 years that it's not even exciting anymore. 100 feels like it could be 65, and so on.
So many I've talked to/read from think that anything over 100 is just insane, and that may be true, but I'd be comfortable cruising at 130+ if I knew there were no LEO's to worry about. I'm not bragging about being a speed junky either, because I know that it's really not a good thing (on public roads). However, high speed is not something I do even 10% of the time I ride/drive, and I'd never do it around anyone to put them in danger.
I find it much more fun getting my kicks around curves (even though I'm still speeding around them, but nowhere near what can be done on straights, obviously), but I do find myself feeling the need to just GO sometimes when the conditions are in my favor. I guess I just try and convince myself that as long as it's just me that can get hurt(yeah yeah, I know about mentally hurting family, friends, etc), then there's nothing wrong with opening a vehicle up every once in a while.