Honestly, most people who I know that bot are people that either:

a)out of stuff to do in the game but want to be in the game still
b)doing it because you kind of need crafting jobs
c)botting because the same EXP curve of a DoW/M is absurd for a DoH/L where you gain way less per attempt
d)all of the above

Look, I have talked with people who bot and most of them are doing it for all of those reasons. If they lower the curve of EXP I would expect most botters to stop. Your average player is not botting for profit, rather to level to counteract absurd prices.