I'm trying to pull the average age down too... I've had my FJR for a little over a month and will turn a crusty 28 in two weeks. <_<
I started at 20 on a 450-lb, 55hp Yx600. As my first mount, it seemed like an incredibly heavy bike to push around, but it had a low seat height (even though I'm 6'3 205) and was comfortable. I moved to a 450-lb, 85-hp Ducati ST2, that seemed like a goddam rocketship in comparison, but it was a maintenance nightmare. I blew my knee and couldn't fit on the ST2 anymore, so moved to the meanest cruiser i could find, a 650-lb, 93hp XV1700. That thing had so much torque it hurt my neck, and complained a lot less about carrying a passenger than the FJR does. I never worried about going into a corner too hot because the thing rode on rails and went where i wanted it to every time, and it got me BOOBIES.
That said, I've never been able to notice bike weight once it was moving... except for the little 250 ninja i bought for a girlfriend that honestly felt like a hamster-powered bicycle.
And if you aren't moving around on the seat while cornering, well, go sit on your barcalounger for crissakes.