I have a cruiser and the FZ6. When it was just the cruiser, it was my baby. When I got the FZ6, the cruiser sat for a week and I would ride it when I felt bad that it sat.
Sometimes, I buy something really cool for either bike -- that's when that bike gets a lot of attention and the other sits.
On cold days, the cruiser (with its big fairing) is preferred. On warm days, the FZ6 is preferred. In rain, either will do with the emphasis on the FZ6 with its Roadsmart tires.
Sometimes, I will really clean up one bike while using the other regularly. Then when I'm in the mood for a new bike, I switch to the clean one.
On maintenance rides, I will ride one and come home and then ride the other back to back. Either way, I have to ride both regularly because if I don't, my skills get better on one and they get sloppy on the other. But I know that riding two different types of bikes has made me a better rider of both.
You thinking of a second bike?
I sometimes contemplate a 3rd bike but the registration/inspections/insurance/maintenance is a pain and yet another freaking toy to care/obsess over would add too much stress and complexity to my life.
Sometimes I wish I could enroll in a bike exchange program where a bunch of us can swap bikes for a month or so and then back.
I love new bikes (i.e., different toys and not necessarily with 0 miles) and getting to know them and evaluating them, etc. I just don't like dumping the cash (you will always lose money) and then having to store the extra bike, etc. I think I think about bikes too much -- I need therapy

. If I ever move to a warmer climate (than NH), a big part of it will be due to my riding problem

.
Dennis