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.