As much as I lust after the sexy 600+ bikes...
They are sweet-looking, but to me it would be kind of like dating Paris Hilton - heck of a rush to begin with and buyer's remorse after the first temper tantrum.
I've been around boats all my life - for most of it, I had dreamed of owning a offshore racing style ("Cigarette") boat. Hit some money 20 years ago and bought a used one - a Scarab with twin 454 V-8s. It was amazing for blasting somewhere, but everything else got old real quick: had to stow the anchor in the cabin, acrobatics required to get up on the bow to anchor it, no visibility over the bow, constant maintenance problems - and believe it or not, the straight exhaust from two honking V-8s that was music to my ears in the beginning rapidly dissolved to just noise.
Sold the boat and took a beating, bought a smaller boat with outboards, bow access, all-weather capability. I didn't look as cool, but I sure had a lot more fun. Expensive lesson, but a lesson learned.
I don't ever see myself on a 600rr - the contorted riding position and the hair-trigger throttle / brakes just don't appeal to me. Maybe it's because I'm getting old. I do see another bike down the road if this economy ever turns around - the Triumph Street Triple (not the Speed!) and the BMW F800r both fit my CBR250-tuned desires for reasonable weight, great handling, and decent fuel economy (though nowhere near 75mpg!). I really don't see selling the CBR even if I do "upgrade" - the ride to work this morning was just another reinforcement of how much I like my thumper.
Everyone is different, which is why they sell so many different kinds of motorcycles. You should get what you want, but my "lesson" above taught me to think hard about my "wants" and to try and look past my nightclub debut with Paris to the morning after - and do the best I can to determine if that was really where I want to be for any length of time.
Good Luck!
Luke