I've had my SP1 for nearly 5 years now and, inevitably, I've occasionally thought about getting something else. But then I think, what would I replace it with?
As many other people here have mentioned, it's a bike Honda built to prove a point, so that alone makes it special. The noise, ye gods, the noise! Gear driven cams, handles like it's on rails, bulletproof reliability. It's not perfect, but that's what gives it personality, right? :)
To get the best out of it you certainly need to spend a bit of money (nice cans at the minimum, plus the suspension needs sorting), but for something with this much character, quality and style (how many other 10 year old bikes look this good?) it really is worth it.
To DARMHA900SS below: A PC will sort out most of your issues, it's a decade-old big twin so it's always going to be a bit lumpy. 20k miles is barely run in, enjoy!