I think my motorcycle days are over for a few reasons. 914's can still be had for well under $30k. I know they aren't everyone's cup of tea, but take the top off and it is the closest I have come to open air raw feeling of being on a bike. Plenty of aftermarket support and reasonable to maintain.
My Bumblebee and my buddies 74 Ravenna. Not great examples of cheap ones but they are out there.