I've got automotive ADD. I'm always on Craigslist seeing whats cheap and interesting, and when I do buy something I can never hold onto it long enough to enjoy it; I have to sell it and try and make some money.
And its not even one type of vehicle, its always changing.
I want a nice old British project car, then I decide if I'm that stupid I must as well buy a old Citroen DS or 2CV, then it gets cold and wet out and I say no, I want a old full size 4x4, a Suburban or a Wagoneer. Then it starts to get nice and I'll start looking for another aircooled VW. I'll then remind myself that no, you've had 3 of those and unless you're willing to spend $10,000 its going to be another rustbucket. So I start looking for a somewhat collectable 1970's full size sedan, Lincoln or Chrysler, something like that (no Cadillacs though, no matter how old they are, Cadillacs are still too "new money"). Then I change my mind and start looking for a clean, pre-1980, regular cab, longbox, 2wd pickup, a proper truck.
And the cycle goes on and on. Its getting annoying. How hard is it to find one fun vehicle you like and stick with it?