Don't know what to tell ya. You either got screwed, or the C14 was a total POS or perhaps your C10 used gold for electrical wires.
And we don't think you all are necessarily rich people, you all are just not too smart with your money. That generally precludes wealth accumulation.
I sold my 2006 C10 that had a bunch of nice mods for $4000 (what I paid for it a year before). I paid $5800 for my 2008 C14 with a few mods. They both had the same mileage. But I feel pretty good about the whole deal, because the C14 feels like twice the bike that the C10 is. The C14 brakes are light-years better, the chassis doesn't turn into a pretzel when you start riding at higher speeds, the fueling is always perfect at every altitude, and the C14 pulls harder at 5,000 rpm than the C10 does at it's power peak. Oh yeah, it can't hydrolock, either.
The C10 was really the good at what is was designed for nearly thirty years ago. But technology has advanced a lot in those twenty nine years. Instead of feeling like I spent too much on the C14, I feel like I wasted $4000 on the C10, because I spent it on a thirty year-old bike.
You are right about me not being rich, but are wrong about not being smart with my money.