W7 has two years of extended support remaining, then it will not receive support from Microsoft. No more security updates, nada. It will be end of life. Windows 10 is now a known quantity. It targets the enterprise, but there are still many consumers who use Windows. Home and Pro systems are primarily user managed and that is changing with W10. That is now even more evident with the introduction of Windows Home 10 S mode (includes the Win32 components), planned to be available for Home users in 2018. However, there are alternatives to Windows for the non enterprise user. Leaving Windows is a choice that was not all that palatable in the past.