My last bike was an '82 Suzuki GS1100 E. At the time it was one of the fastest (1/4 mile and top speed) production bikes made. I managed to twist the crankshaft about the same time my first child was born. We decided that my wife should quit her job and raise the kid so that left no money for repairs, I sold it for $500 to a bike shop and it was reincarnated as a drag bike.
I left that bike stock, it went plenty fast. My previous machine was a GS 750 E. I put on a header, ditched the stock airbox, rejeted the carbs, added rearsets and clubman bars and spent 9 months out of the year straightening out as many twisty mountains roads as I could find. I lived at redline. My wife and I took a 2 week Appalachian Mountain tour (WVA to NC) for our honeymoon on that bike. Of course I removed the rearsets for the stock pegs and got a higher handle bar for comfort. Redline was met only in the first three gears during the whole trip.
The only time I miss my bikes are spring and fall. These were my favorite times to ride, I now get the same thrills skiing but now I can find that thrill only 3 months out of the year. I just might buy myself a 500cc to 600cc crotch rocket to throw around in the twisties.