19-year-old with 100K shouldn't buy luxury watch, should grow wealth instead.

I would say absolutely not. I would not consider a 10 to 15K watch any sort of a risky asset. If you're 19, you already have 100K to your name. Clearly you're in the risk business. You're doing something to make that money that's probably taking on an adverse amount of risk or an extreme amount of risk, I guess, and you're super fucking young. I would just try and run that number up because you're so fucking young rather than put it into a watch. But if you hit a mark, you're like, damn, I hit 100K, that was a goal of mine. Putting 10K in a watch might save your ass because that 100K could be 50K if you do something retarded, right? Good question.