I have never botted myself, but I think positively of bots.
They are much better than "I'm awesome, but you all suck, I'll keep farming HKs in the mid while you lose the flag" kids around.
They are obviously smarter than some human players, hopefully will be even better on next generation of them.
And if you have like 40% of bots in your team in a map like Arathi Basin, I think you can command them by yelling out base names in bg chat.
I witnessed dozens of times, an army of bots came to my help when I called out "incoming farm". Much better than some players around, no offense.