Sexy, cool - not!
I fail to see what is sexy or cool about an exposed final drive chain flinging oil/grease/crud over the rear end of a bike. The exposed final drive chain itself is often neglected too, resulting in it droooping and/or rusting whereas a (even neglected) fully enclosed chain can go for years without adverse effect (as I found with my old Honda 400/4 fitted with a Furlong fully enclosed chaincase).
An exposed final drive chain is actually deeply unsexy and frankly an engineering embarassment, which companies such as Honda have quietly recognised, as evidenced by their newer models now having shaft drive.
For a very long time, in fact decades, motorcycling has, in my opinion, been held back by a totally asinine aping of racing machines, which had became the majority segment of the motorcycle market in this country, when it should always have been a tiny minority.
'Race-reps' have been a totally blind alley and worse, appalling for our image in society, which has had the negative effect of stigmatising and marginalising us. But thankfully, more realistic motorcycles are coming back into 'fashion' as, for example, the reality of sky high energy prices bite.