Lol. Man, this has been an ongoing debate since day one and I, too, have found myself on both sides of it, and have decided bots bring a lot to the table, both good and bad, but ultimately, I like the devs approach of building in ways that encourage human players natively, rather than having an opinion one way or the other.
As long as bots are used this debate will persist so unless the devs ban bots or finally develop an environment that makes them less competitive I see no need to stress over the morality of it, since it doesn't matter down in the trenches, anyway.
RE: It's up to us