A long time ago, I had desktops with huge uptimes. The world has changed. I will no longer go that long without a security update. Too much is now passing through my machine.
(As far as you know, none of your machines were ever hacked.)
Your luck is not good security policy. When I was getting started with Linux in 1992 and only intermittently connected to the Internet via dial-up, I celebrated long uptimes. Now that I do daily banking and other activities on a machine continuously connected to the Internet, uptimes longer than the interval between kernel security updates is just irresponsible behavior.
I would prefer to not have to reboot. I know that is not the world we live in. The stability of the kernel is no longer the reason to think about uptime.
I don't care that you have nothing of value connected to the Internet. I am objecting to the advice about not rebooting.