I upgraded windows 7 to the windows 10 and I see windows 10 is very best and cool operating system. Its look like so pretty and its start menus look is good. In Windows 10 security and support software is updated. And brand new feature Cortana( Persanal voice assistance) is added. It fixes very bugs.
Someone says pirated software and games not play in windows 10 but it not true . pirated software and games works on windows 10 very good. To play pirated games or software needs technical( some tricks And tweaks) knowledge to work them.
I played Assassian Creed 3, World Warcraft, Call of duty 4 games in windows 10 with ATI radeon hd 4650 graphics card with high resolution and high setting. And old software also works on windows 10
Finally I say to use windows 10 need some technical knowledge Because of windows 10 is very Good OS of Microsoft.