An annoyance of using iTunes is the Apple Software Update. At one point it forcibly pushed Safari on users. At least now Safari is an optional package. The problem is that Safari, and other packages, are "checked" for install by default. I was constantly having to pay attention to make sure I didn't accidentally trigger Apple's relentless quest to get Safari on to my machine.
Well, there is a solution. Under the Tools pull-down menu, there is an "Ignore Selected Updates" option. So one can simply check Safari and other packages, then use "Ignore Selected Updates". From then on, Apple Software Update will behave as though those packages don't exist.