Hi Gang

I'm an older experienced Desktop user (with a new DELL Forum ID). I'm sure others have asked this question. Is it worth the effort to format an older Optiplex 790 Full Sized Desktop with a fresh install of Windows 7 Pro? Or have the required security updates been permanently discontinued? Reason I ask is that I have many older applications that install and run fine in using 'compatibility mode' within W7 Pro.

OR

Should I shop around for a newer faster Optiplex and make a switch to W10? I'm not sure these programs can still be installed and run within Windows 10 Pro?

Thank You