Saving money = not spending it

or investing in something that you know will increase in value at least at 70% of chances, like bitcoin
I think you understood the meaning of saving wrongly because to invest money in bitcoin one must save money first before investing. So one have to either reduce their expenses to save money or increase their earning to save money. I think the better one is try to find more ways to earn money to save more.
everyone is saving at least a portion of it's fortune for the future, it's mandatory nowadays, this saving can be increased if you invest in something, not leaving it there to be eaten by inflation
leave money doing nothing it's almost always a bad thing, especially in fiat...
but not so much in crypto. Bitcoin is still pretty young, so there is constant Research and development going on to make bitcoin work better or to build applications on top of bitcoin. And you don't need to save to invest. Investing is like spending money only you expect, that you get more of it back, than you put in. If one is really good at investing, they can say that their job is wisely spending their money.
In regards of saving money, I myself ordered a minted wallet from ognasty along with some online seats with it. I will occasionally send some dust on it as well. Just to see how much I can scrape up before I sweep it.