What does this give me that I don't already have?
Now
that is the $64k question -- and thank you for asking it!
My history with computers began with a Radio Shack TRS-80 Model 3. I went from there to an Epson QX-10, a gorgeous (and expensive) alien system that looked wonderful and did a few nice things easily but spoke a foreign language that nobody else understood.
Then I got a Microsoft 286. I believe there were a few more progressive stages after that (I don't remember). But I do remember falling in love with Windows 95 and being extremely sad when I had no choice but upgrade to Windows 98-SE (Second Edition), which I loved as much as 95 and held onto until my last computer died in my hands.
I now have Windows 7 (Home Pro), which I am quite content with. But it occurs to me that it doesn't do much more for me than 95 did -- because I am a basic computer dummy and I use a computer for just a few basic applications, mainly word-processing, email, note-storage and research on the web.
7 is more sophisticated than 95 and 98-SE and I frankly like it a lot. But as usual I look forward to the day Bill Gates forces me to upgrade, probably to Windows 10, with some moderate dread. Because, as you have asked, what will it do for me that 7 isn't already doing, and 98-SE did, and 95 before that did?
To say it another way, I would be perfectly content if Microsoft did nothing more for its operating system but constantly eliminate all its existing bugs, lubricate its gears, kill the viruses when they are born, and just keep polishing it whenever and wherever possible.
I'm content. I don't need anymore.
Leave me alone.