Buy a motorcycle. It's a thing, but it gives you experiences.
Of course, like many awesomely fun things, it's quite dangerous, which is why I won't start riding again until I'm 55 or so.
I don't have the time to tour from London to Croatia by bicycle, and there's no way I could consider it in any two-week break. I did it last summer by motorbike, and it was nothing to cross multiple mountain passes a day along the way.
I think you've hit on an important nuance there - buying things in the pursuit of experiences: good, buying things strictly for their own sake: not so good. As long as the pleasure of owning the thing is secondary to the pleasure of using the thing, then all is well :-)