I'm not sure about you but I think part of the reason I drive for Uber is because it's an excuse to feed my caffeine addiction. I've seriously tried driving without coffee for a few days but doing Uber became a whole lot more boring, exhausting and less rewarding. I need some kind of a substance to dull my senses so I can get through the tedious interactions with people that would otherwise annoy me.
Dont know if it dulls senses I think brain starts working with more power and better able to deal with and rationalise the crap of the day Think of it like the story about the man chopping wood but is pissed off with his shit life They are then encouraged to go away and seek enlightment After a good while of self discovery the dude finds this enlightenment They then immediately back to chopping wood Fulfilled for good I tried giving up coffee once First two days was headaches By thursday morning everything felt boring and tastless By thursday lunch i was drinking coffee