Why is there a bias against MP only games?

[Goatseye]

Chazore said:

archer9234 said:

Yeah. Luckly that's one reason why I got Overwatch. It has bot modes.

It's rare to see bots in any MP games these days which was why I was happy to see them in games like TF2, Titanfall, Overwatch, Heroes of the storm etc. 

Remember how Titanfall got bashed for having bots in it? Respawn even crafted a mode without bots due to so many voices that weren't even gonna give the game a chance.