I'm not convinced that ANYBODY of any age/experience really NEEDS a sportbike with >100hp to have fun riding.
There is too much ego, image, posing, bragging, lifestyle marketing, bench-racing, etc. in motorcycling and motorcycle marketing as it is. People end up spending much more than necessary, and riders end up getting killed.
I've ridden a friend's Suzuki GN250 with a passenger once or twice, and I'll tell you, we had plenty of fun!