I get the gag here, but it's not a very apt comparison. The expected return from a roulette spin is really well understood: a loss of about 5% of your bet, alb

I get the gag here, but it's not a very apt comparison. The expected return from a roulette spin is really well understood: a loss of about 5% of your bet, albeit with high variance. The future of these investments is less understood. Again the variance is high, but its performance over time is also really good. Perhaps you have plenty of reasons to doubt the future performance of BTC, but it's not like it's a known bad bet.