system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: with windows XP support ending, will I actually be at any security risk using it, if so, why?

Assuming I continue to use microsoft security essentials and my common sense, am I actually at an increased security risk like they say, or do they just want me to upgrade?

If I am at risk, why? Will security essentials just stop updating/keeping up with new threats?
gpt
The risk you are taking is that if new security exploits are found in Windows XP, they will not be patched/fixed by microsoft in an update.  Your system will be vulnerable.  While XP is a very solid and secure OS, new exploits are still found on occasion.

Will security essentials take care of this? Yes and no, while some issues will be caught by this, others will not.

So should you worry? You should be cautious, but not too worried--at least for now.  If too many security exploits are found, and if they are easy to use against a system, you would probably be wise to upgrade to a modern OS and just play it safe, your data and security is probably important to you, so you should keep it locked up.  It's OK to stay with XP for now though unless the shit hits the fan.