I've had a computer since the 70's.  I've transitioned from a Commodore  to an IBM portable that booted from a floppy.  I've had Windows 1.1, (it was on a floppy), Windows 3.1. Windows 98, 98SE, Windows ME, Windows XP, Wiindows Vista, Windows 7 and Windows 10.
My new laptop has 10 and it's slow, it often is unusable for periods of time while Microsoft "updates" the buggy system.  Windows 10 has "updated" and removed programs and files.  When you have a 1.3MB Internet connection it takes hours to update at times.
Booting my Windows Vista takes about 2.4 minutes and it's ready to work, my Windows 7 computer takes about 1 minute and it's usable, my Windows 10 computer is between 3 minutes and ∞ before it's reliably useful and then in the middle of something it may ask to reboot to, . . . if you guessed update, you're right.

I run reliable antivirus and a firewall in conjunction with a router firewall.  I don't open emails from unknown sources and I don't go to warez sites, porn sites or sites found in emails.  If I get an email that might be something I want but  am unsure of I look at it with "view source" which shows where it really came from and what's in it without it having the ability to run a script.  

In the 40 years of computer use I've had one (1) virus that was quickly eliminated.  I received an email from a friend that said I should look at this fireworks picture and at the time (Window 98) I had Norton which immediately said it was a virus and removed it.

I still have a computer running Vista Ultimate and it runs fine, I will not "upgrade" to Windows 10 on my Windows 7 computer because I've already found several important programs that don't run on Windows 10 and I'm not going to spend several hundred dollars just so I can slow down my computer and have Microsoft decide what programs I should have or not have.

There's a common misconception that Windows "X" is going to stop working when Microsoft stops support, all it means is they aren't going to update it anymore.  Using common sense and commercially available protection programs are adequate for the average user.