As it is not supported anymore. You can go right ahead, I hope you like your screen door Internet security that XP has.
Windows Xp is still supported and gets regular patches and updates. Microsoft had to put that one off due to the large user base of Xp who refuse to upgrade on their schedule which includes a lot of corporate users.
Windows Xp can be very secure if it is administered right. In a default installation it is not very secure at all. If you take the care to install a good firewall and antivirus and only go online in user mode, you are halfway there. If you know how to set file permissions and model your file permission and access structure on Unix/Linux and you know how to tweak the security settings in administrative tools, you can make Xp much more secure. And if you add imaging and do an image of your system on a regular basis, you can recover quickly from any malware or corruption of your system whether it is from hacking, malware or just installing a piece of software that doesn't work well with your system.
Security depends as much on behavior as technology. If you never go to pirate or porn sites, your security rating automatically goes up no matter what system you're using or how well you administer it. Just like living in the big city and avoiding dangerous neighborhoods.
