Interesting tread. What it seems to indicate is that everyone rides a bike with different objectives in mind. My neighbors son...who had never ridden a bike before...bought a CBR1000 because a friend had one, rode it a week, and sold it before it killed him. Probably really smart knowing him!
I have been trying to get my former boss....a decked out hog owner...to ride my CBR600F4I. So far no luck. I think the thought of riding a 100 HP bike scares him too much. The temptation to ride the roads like you were on a track is really dangerous and hard to overcome. Maybe the hog is his adrenalin limiter.
I don't think buying a 600 CC class bike vs. a 1000 CC one will limit you doing anything that is legal and isn't apt to get you killed. Do you really need to go 180 vs. 150?
I really bought the CBR as a daily rider. It's light, has "higher" bars, has fuel injection for good economy, and probably has twice as much horsepower as I will ever use. In April, I put over 2000 miles on it on a trip to Tenn. and back. I don't find the riding position to be that uncomfortable.....but most people do. A good used one can be had for 3-4 thousand...less if you don't want perfect plastic.
The suggestion to try before you buy is a good one. Most dealers will let you try out used bikes. BMW will let you try new ones.
All said from the perspective of a 65 year old of course....

Jim