Bitcoin Back Credit Cards - What's Your Take?

Big coin back credit cards are rolling out globally, and we're arady seeing it here domestically. The way it works is, every time you spend money, you accrue rewards at a rate of one and a half rewards per dollar spent. And those rewards purchase bit coin at what seems to be an arbitrary interval. But if there was a huge drop in bickan crashed in the middle of the month while it was crashing, which i think would be a huge benefit here.