Being a (somewhat) minimalist I never do install unneeded software such as AI suite. It is my primary 'beef' with off-the-shelf model computers - bloatware. In almost every case (as you found with AI Suite) the features offered by bloatware are not exclusive or even special - often, aftermarket freeware performs those tasks better. I can't say why they are included off hand - I could make some guesses but I really have no clue.
Along those same lines, I would suggest that every blue moon, go into msconfig and see what's really playing around on your computer and... do you need it there or can it be disabled/removed.
Just my take on that