I don't diversify because I've spent thousands of hours understanding one thing very well. I'm young, so I want a free future and have time to be riskier.

I don't discourage people from some level of diversification. I have older friends who I've encouraged to buy a little Bitcoin alongside their much larger stack of gold. Right on. Perfectly fine and achieves many of the same goals.

I do discourage people from diversifying into something like Ethereum because of point one. It's shit. Why give any amount of resources to a horse that has obviously lost the race? It makes no sense. Gold at least is still viable and serves many of the same purposes for people who won't understand Bitcoin enough in their remaining lifetime to go all in on it.