In fairness, this is not due to any failing from Binance.US specifically, but rather, is due to the regulatory hurdles it must contend with. That being said, Binance.US currently has 53 cryptocurrencies (including stablecoins) available for trading.
Crypto-marketing. A scheme in which promoters of securities tied to cryptocurrencies recruit investors to pitch the investments, often to friends and family and through social media and blogs. In return, these investors are promised a generous return plus the promise of commissions on their sales.

“It was almost like you just gave a 21-year-old a million dollars,” Harrison said. “I get it — they were excited to be so popular.”
While paying for things in cryptocurrencies doesn’t make sense for most people right now, more retailers accepting payments might change that landscape in the future. It’ll likely be much longer before it’ll be a smart financial decision to spend Bitcoin on goods or services, but further institutional adoption could bring about more use-cases for everyday users, and in turn, have an impact on crypto prices. Nothing is guaranteed, but if you buy cryptocurrency as a long-term store of value, the more “real world” uses it has, the more likely demand and value will increase.