Nothing wrong with continuing to use XP, if it's fully patched
Absolute nonsense.
It
cannot be fully patched because no XP security patches have been released for over 18 months.
The problem about using XP is not necessarily for the person using it directly, it's for the rest of the world because that XP machine may have been infected without the end user being aware of it, and is then being used to the detriment of the web as a whole - for example in spamming and DDoS attacks.
It's fine to pontificate about internet security
This isn't pontification. We were recently hit (collateral damage, not the target) by a large DDoS attack on our network provider. Where do you think the botnet members come from? XP was more vulnerable to attack than Vista, 7 or 8 even when it was being supported, so it's reasonable to believe that it's even more vulnerable now, so it really, really should not be connected to the internet any more.
SD