Windows 7 will become deceased in January so MicroSoft says, no more updates, which means some may stop writing drivers for it. You may be able to get private party updates to the browser but in my mind the biggest setback once microsoft stops supporting it is security updates.
I switched to Window 10 recently and I am going to make a suggestion to all Win10 users or possible future users.
I ran a program that we ask all customers when we install windows 10 if they want it ran. Its called 10 antispy, it deletes all the spyware and bloated cramp from win10.
My win10 flies is noticably faster than window7 with all the spyware crap out of it.
You can download it here
https://www.majorgeeks.com/files/details/10antispy.html