Like many other things (homes, guns, cars) deciding on which motorcycle is a trade-off. Whatever you decide on will be a compromise. I have a great commuting bike. Ninja 650. Sadly I can't tour or off road with it, or even ride it for longer than an hour and a half, as my arms go numb. The good part is that every bike has an element of fun!
MSF safety course and continually learning about the physics of riding is a MUST!
No matter how long anyone has been riding, they can always learn more. Part of the problem is that we pick-up bad habits. Learning from the mistakes of others is also very important.
Good luck.