I love the idea of mining! I’m struggling the make the math work though.

Spend $23k to buy 3 S19 XP machines, install electrical, and install infrastructure (not factoring in solar and building). Say it’s $0.02 kWh because of solar. After three years, I end up with 0.64 BTC

I could take that $23k and buy 0.77 BTC right now.

Buy equipment, work on the miners for three years, and end up with less BTC. What am I missing?