But why?
That's why.
"Redemptions for Uber credits start at 500 points for $5 and all other redemptions start at 2,500 points for $25."
"Bank deposits will be transferred to your checking or savings account within three to four (3-4) business days and there is a $500 daily limit for cash back rewards deposited into U.S. checking or savings accounts. Statement credits will be posted to your account within one to two (1-2) business days."