I've had alot of bikes, but I always seem to gravitate towards Gsxr1k's, just a favorite for whatever reason.
It's also a bike that, if you want one, shop around, you've got options, then go get one.
You, CBX's seem to be a favorite, and you've been bike shopping lately, but apparently nothing has been good enough to buy, and I understand that all too well.
CBX's aren't that common, and good examples, especially for sale, are even harder to come by...and all this you know well.
And, if that bike breaks down, it's not going to be much different in terms of a modern bike breaking down, it's either going to be a minor repair, or catastrophic failure...which of course is very uncommon.
I think "why not?" is the better question.
I can't think of any 'nots' when you find a bike you want, that's in good condition at the right price.
That one is a cool piece of history too, and another testiment to Honda's quality.
I've already decided what I'm adding next(used Goldwing)...and I bet you have too...CBX
lol