I bought my first Harley as a basket case when I was about 10 ---------- get thee to a motorcycle shop now! You’re way behind where I think you should be.
I do look forward to the “Why did I buy these fucking donkeys?” thread in a couple of years. 
I voted donkeys because the other choices are so predictable. But in a perfect world, capybaras.
Miniature donkey: Burrito.
Harley has the solution for the fear of spinal injuries. Jokes about second childhood provided by purchaser who would never have been able to pay for one at a younger age.
Get a little red sports car. Much better choice than a motorbike, and might help you pick up some of the shallow gold diggers which might spice up your sex life.
Was your black panther able to stand and raise his little kitty-fist in defiance while wearing a beret? 
I just HAD to vote donkeys.
(Man, it’s asses all the way down!)
On a serious note, my mid-life crisis hit early, and I really worked at finding something that wouldn’t cost me a bundle, or my marriage.
Turned out to be an assortment of fairly tame things I’d never gotten around to doing*.
Better to have your wife rolling her eyes than filing papers.
*hop a freight, build a treehouse, play tag with my (grown) friends on a playground, rent a convertible and drive up the coast…
Only when that final conjunction is “and” that it really starts to hurt, although to be fair if the later is true, the former is often as well.