Is Windows8 a new and great OS?

I heard Windows8 PC is not sold well compared to Windows7 PC. I'm not familiar with a touch device such as iPad, iPhone or Android. I may be an old type person who use a traditional mobile phone. I cannot like a touch device. I want to keep using key board. A lot of people use smart phones and enjoy all-time connection to Internet. Is those devices smart? I cannot understand.

タグ：smart phone Windows8