My point is that the true believers do want to eventually buy groceries with cryptocurrency.

My point is that this conversation is unfair:

Person A: I've just invented a new currency! I think it has better intrinsic properties than USD.

Person B: Well, I can't buy groceries with it right now, so it sucks.

Similar vein:

Person A: I've invented a new thing called the lightbulb. I think it will revolutionize lighting.

Person B: It's more expensive than oil lamps and electrifying buildings would be a massive undertaking. Lightbulbs suck.

If lightbulbs were primarily used for buying opium and running scams on widows in the 19th century I could well understand there being some pushback on the whole idea.

As it was, they were primarily used for lighting rooms from the getgo.

I imagine some historian could probably dig up some sort of analog from 100+ years ago (possibly on tech that never did take off) but this isn't it.

I never owned any BTC. I wouldn't put all of my savings into BTC, but it would be useful for (semi-/sometimes-) anonymous transactions. That makes it better than credit cards, checks, or cash because it can't be CC skimmed or physically robbed.

I would like to buy groceries with it, but I don't want to hold much BTC for very long.