I believe that there are many people here in our country that are earning thru Bitcoins like me, and to answer that question, obviously yes.
Me paid thru Bitcoin > I convert that Bitcoin into cash > I used that cash to buy some goods > I helped the economy already.
I mean it isn't Bitcoin directly, but we're converting it into our own currency and that's what we are using to buy. I guess this is pretty obvious already right? Why OP needs to ask a question to it?
To be honest any people who invest in Bitcoin aren't losing, most people are lost because they're trader and don't want to hold it at least for four years long.
That's the problem. They don't want to hold Bitcoin for a long time and yet, they are jealous to those early adopters who are now millionaires because they've been holding their Bitcoins for nearly a decade already.
If investors want to at least have a large profit in Bitcoin, they have to hold it for a long time - say at least 5 years or longer because the longer, the better.