There are a lots of extra features which make it worthwhile for many people, not to mention the fact that support (from Microsoft, and hardware/software manufacturers) is an issue for many people.

Besides, your personal choice about which version of Windows to use is irrelevant to this thread (despite a mention of Windows 7, the issue is almost certainly nothing to do with it, and even if it is then changing to a different Window version may not be an option), so your post does not really belong here.