When I want to download software, I want that software, not other piece of software that's going to install itself in my browsers and mine my information.
I know computer savvy users who have refused to give Chrome a try precisely because it has been bundled with so many other things over the years.
If your software is bundled with something I am installing, I assume your software is junk unless I already know otherwise. Even if your software is decent (e.g. Chrome), I can decide independently for myself when or if I want to install it.