95% of people buy, sell and transfer Bitcoin to do one thing: speculating on Crypto-Assets. It really doesn't matter if the fees are so high, it's not like people buy crypto like candy, they buy it like stocks.
Who cares if there's a 30$ fee on a 1000+$ transfer? That's still cheap compared to other methods of international money transfer. People are obviously ready to spend that much.
Bitcoin has always been terrible as an everyday currency, even when transactions were practically free and fast, who wanted to wait 10 minutes to confirm their purchase of a Grand Latte? Just pay with any of the existing methods, they work just fine, it's a solved problem. There's probably 1000 cryptocurrencies that could work for that just fine, but nobody really needs that in the first place.
You gotta realize that Bitcoin is gonna be worth A MILLION dollars or maybe just one dollar, but then it could go back up to a thousand again! That is the real value of Bitcoin.