While much of the trust and reputation of both Binance and Binance.US depends on the support and functionality of the two platforms, customer support is not the only factor that may affect their reputation. One such factor is the number of outages that the platforms have had, something far more common in the rest of the world than in the U.S. and a particular issue in mainland Europe. On this basis, Binance.US (despite being the newer platform) has experienced far fewer problems recently, boosting its reputation in territories that can access it.
Crypto coins use the process of mining and the resulting blockchain as a physical measure of the currency. This is similar to how Reserve Banks used to have gold reserves that backed their fiat currencies.

All the signs, however, were there. Like previous bubbles, people were basing their belief in the cryptocurrency on their emotions, not any intrinsic value. Then there was the FOMO element, which only compounded things. Essentially, bitcoin became an international fever. Random companies were “pivoting to blockchain” for no apparent reason other than that it seemed like a way to create buzz. But when the bubble bursts, FOMO turns into fear of losing, which makes for an especially rapid plunge.
If you are a user outside the U.S., there are greater opportunities to trade and buy numerous coins on one platform. For those in the U.S. wanting to do the same, they may find themselves resorting to the use of other crypto exchanges.