We have five machines, two desktops, two 17" laptops and one 11" "transformer" notebook....... (it doubles as a tablet). My gaming desktop has Win 7, the wife's laptop has Win 10 and all the rest have Linux.I rarely use my phone anyway and I always opt out of all advertising even with Microsuxz (on the couple of machines that still have it). I also log out of Google on the computer as soon as I'm done using it.I could use Google on this setup, but I don't. As long as you don't sign into Google on the phone, you're ok.
Nevermind that they try to push you into doing that 9 ways to Sunday.
I don't use my phone either but I think I have my Windstream email on it. I also have it on my tablet. I use a regular desktop unless I'm not home, then I mainly take my tablet to read one of the books I have on it. My desktop has Windows 7 on it and that's what I prefer.
We have until January of 2020 when Microsoft completely ends all support for Win 7, no more security updates.