Knowing that windows xp will no longer be supported by microsoft, do I really need to leave it. My computer works fine and don't really want to leave.
My opinion, and everyone is entitled to it, is that as long as your computer is doing the things you need it to do there is no need to change. Eventually you will find that things do not work well and then you can decide on a new direction.
I agree with xhi, If you're satisfied and it's running ok. there's no need to change unless you start having problems. Just keep your A/V ( and I'd recommend an anti malware if your not already using one ) updated and make regular scans a part of your routine. A pound of prevention and all that.
One thing to consider after support has ceased is whether you want to run an OS that is no longer receiving security updates. As time goes on XP will be more and more vulnerable to attack. AS a lot of people are still using an unpatched and non-supported XP the malware gurus will be sure to take advantage of that situation.
So whether you should change or not? Only you can answer that question. You must weigh all the factors and risks, and see if they are acceptable to you. If I do a lot of online activity I would shy away from XP once support stops.
Ultimately no one can answer your question for you. This is something you must research and dwell upon. It is after all your machine and you are responsible for it.
I guess i will just upgrade to a new computer later this year.
Another option would be to upgrade the operating system, trying windows 7 or 8, or if the computer is older and won't support them you might consider using a variation of Linux. Most are light on system resources and work with older machines.