I'm an XP lover and while I have moved on to Windows 7, my Windows 7 machines are configured to look like the XP Classic interface as much as possible. I'm pretty happy with these machines for now...
I know that there is another popular DaniWeb article concerning why XP won't die but I wanted to provide some related information about the risks in running XP at this time that some of you may have not considered.
After April 8, 2014, those of you that continue to run Windows XP will no longer have any type of advantage over attackers any longer. Starting in May, specifically May 13, Microsoft will release security updates for supported versions of Windows. For example, there may be security updates for Windows Server 2003. Server 2003 is fairly similar to XP so attackers will be able to reverse engineer those updates, find the vulnerabilities and test them against Windows XP to see if XP shares those vulnerabilities.
If the vulnerability is shared, attackers will attempt to develop exploits that can take advantage of those vulnerabilities on Windows XP. Future security update will never become available for Windows XP to address these vulnerabilities, so those that remain running XP are essentially unprotected. Your antivirus and firewall may not provide you with protection expect. A simple act of accessing an email attachment or visiting a comprimised website could potentially infect your system, bypassing those security products you are depending on.
This doesn't mean that the only option is to move on another version of Windows. This could be an opportunity to look at other popular, open-source operations systems.
If you decide to remain on XP, the only way to fully protect it is to keep it isolated, ensure its off the network and do not install untrusted software.