What anyone else does with their computer is really not my problem. Outside of the fact that if something happens and their computer is hijacked and becaomes a spam machine... Or whatever. Regardless, security is not a piecemeal thing. Do it completely. Otherwise you are not all that much better than not doing it at all (though I admit some protection is better than none. Marginally. And I also admit more likely than not the types of problems not patching will cause will affect his local machine). I agree that this "router only" type recommendation is irresponsable. Or at least dangerous. Because, no one ever makes mistakes with their routers settings, right? No one ever keeps their passwords set at whatever the routers default is, right? Any one of these little things missed can mean trouble. If you want to practice what amounts to lax security with your computer, fine. That's your business. Personally I don't see how you can in good conscience recommend the same to others. That's just my opinion I suppose. No one is going to convince me that "just a router" is going to be "just enough" security for my computers. I will always update with critical updates. I will always recommend this practice (outside of if the fix causes problems. And I would say find the one fix that breaks your setup, don't just ignore all of them. Like I did earlier). I'm not trying to be a complete @$$, just a bit of one, because the security of your computer has the potential to affect untold numbers of other computers (albiet indirectly in many cases).
\Dan