I suspect most people would say the same about a digital cryptocurrency.
The client can be set up literally in 20 seconds and you are ready to recieve cash, so even a hippie selling alpaca socks or a site selling beef jerky (just using forum examples) can start their business right away.
negative. The client still needs to d/l the blockchain. This can be a game killer for a lot of users for some reason. Most of the people I've showed it to got impatient with the blockchain downloading and got upset and never did anything with it.