Apologies if this point has been made - I did skim through all four pages of responses of switch to Linux, switch to Mac (both might be valid arguments, but not the point I'm making) etc without seeing it...
Fair enough, I can understand 'get a new PC' because one that was sold running XP (assuming a home machine, not a business machine and therefore likely to have been provided with XP for as long as possible) is at least 5 years old (probably 7 since resellers starting shipping consumer PCs with Vista) may not be up to the job. Seems wasteful if the hardware works but I accept that the argument can be made.
However, I can't accept the argument as a reason for buying a new PC, that if you upgrade you'd need to find your application install disks and license codes, that you'd need to backup your files and restore them. Surely you'd need to do this if you went and bought a new PC anyway - it won't magically have your applications or data.
So maybe they're advocating that you go and buy new copies of Office and other applications too - and presumably just throw away your old photos, files etc rather than transfer them as clearly they're old and useless?
Or that you buy a new PC, but that you keep using your old XP one rather than upgrade it as that's the one that has your applications and files...
Or that you buy a new one, but then have to do exactly the same steps to install your applications and transfer your data that you'd have to do if you upgraded.