Being ~anonymous online, cryptocurrencies are my only option for buying and selling stuff online. Leasing VPN services, servers, VPS, etc. Getting paid for writing and other consulting work.
The speculation aspect is just meme-driven bullshit. What we need is cryptocurrencies with stable values, for online commerce. I'm not sure what you mean by "aspirin" vs "vitamins". But for me, getting out from under the thumb of government is extremely interesting.