I'm not sure why ignorance about computers is acceptable when ignorance about other matters in life is not.
When you buy a car you're expected to know what the options are for, and if you don't you're expected to figure it out, not just say "ok" to everything the dealer offers.
When you order dinner at a restaurant you're expected to know what you're ordering or ask if you don't.
The same goes for cable service, telephone service, clothing, and every other product you acquire in life.
Why is it only IT companies are expected to assume their users are completely ignorant and must be handheld through everything?
Now, I'm not saying at all that I agree with the practice of selecting unneeded software packages by default, but that doesn't change the fact that users should be *expected* to figure out what something is before they click on it. The problem isn't that companies offer things that users don't need, the problem is that society accepts and even encourages ignorance in IT matters.