While I respect your desire for the freedom of choice; it's a bit foolish to neglect updating any software that directly interfaces with any networks, especially the Internet. Pretty sure chrome based browsers require updates just as frequently...
I had tons of fun with Gran Turismo 6 as well. But I wanted a bigger selection of American and European cars. Seemed that with Gran Turismo they would add any car you wanted as DLC, as long as it was a Nissan GTR.
Switched to Forza after Gran Turismo 6. I might be ready to give PlayStation and Gran Turismo a try again when this eventually comes out.
I’m still running and XBox One X, haven’t send anything compelling enough to upgrade yet.