When I started riding, I thought my R50/2 was "sporty", but then I moved on to British Twins, then Italian Twins, then Japanese V4s, and then a garage full of everything, including GS inline 4s, Japanese Twins and ...then found myself back on a German boxer twin.
My neck finally wore out around 2002 from the ergos of bikes like... (Italian Twins, with noisy clutches) and Japanese 4s (Yamaha R1)
All things considered I have found that really extreme race type ergos are really great for track riding, but out in nature with traffic , hazards, wildlife and whatever, they can limit your vision, make me tire out faster and generally look like you showed up to a Water Ballon fight with a Mac10.
I've rented cruisers here and there, and oddly I've mostly hated them. Scrape in turns, controls way out in the front and nearly all made my lower back very sore really fast.
Nope, not for me, gimme a sporty bike with ergos that work for control and comfort.
I have my Geezer R1250RS, A Hooligan KTM 690, and a SuoerGrezer, 2007 Bonneville (Hinckley). But no committed race replica, for now.
When Im 90, I just hunt down something crazy ( Brough Superior, Black Shadow, RC45, and ride it off The Edge into Eternity