Won't make a difference
I agree this won't make a blind bit of difference - the Gen Public simply will not "get" anything different to Windows.
And actually that's fine by me - like an earlier poster I can recommend PC Linux OS (pclinuxos.com). I have been using this on my home machine for some years (various versions) and it's no hassle at all. It just installs and runs reliably and fast. Other Distros might well be better - I don't know - all I know is that Pclinuxos has not caused me enough grief to even think about looking.
OK the non-technical will complain about it not being Windows but for the technically competent amongst us it's great that the scumbags that write various malware and network borne nasties have the great unwashed and their insecure crappy Windows install in their sights and not me!
I have to deal with Windows related nonsense and instability at work - it's a pain but I get paid for it!
At home the no hassle Linux option is the ideal solution for me.