I don't tip (as much) if there's a big surge pricing, or the guy was annoying or rude in some way. Otherwise, if you look at what they're taking home that day

I don't tip (as much) if there's a big surge pricing, or the guy was annoying or rude in some way. Otherwise, if you look at what they're taking home that day (sometimes you can see their balance for that day on their screens), it isn't so high.