I dont. Unless you are forced to I wont be playing single player at all, and if you are it will only be to the extent of unlocking what I need then never doing it again.
This game is clearly MP orientated and should be bought and assessed with that in mind. If you are looking for a strong solo experience there are other shooters out there designed in this way like Killzone and such which would provide more of the experience you may be looking for. It's multiplayer that keeps you playing for weeks, months and even years not single player.
Lastly Bots are crap in every game ive ever played so what exactly is the issue for Brink?, that Splash Damage failed to revolutionize computer programming and take Artificial Intelligence to the next level?. Or maybe that the heavy use of objectives and multiple ways of completing them exposes just how little bot AI has actually advanced industry wide in the last 10 years.
In a game like CoD which is almost entirely deathmatch your bots dont need to do anything but shoot and move. The current standard of bot AI using the big advancements of the last decade like ducking in cover when shot at or moving between cover during no fire is adequate for the task but in no sense is it an achievement or progression.
This is exactly the attitude that will keep A.I. the same for another 10 years. 'Oh, Well this game is multiplayer oriented so we won't worry too much about A.I. someone else can handle it.' Altho yes, Skyrim is doing this, But, How many other companies are willing to progress so far only to have their engines reverse engineered and other companies basically ripping off their technology, Tweaking it, And calling it their "New and improved A.I.". I personally, Would be completely pissed off.