Actually unplugging it causes a small electrical short which can cause a power spike. If your power supply is good, no real problems - it'll blow before your computer does.
Will a power cord be damaged if I unplug it?
Typically, an appliance will not be damaged if it is currently ON and then you unplug its power cord. If you plug it back in the device will simply resume operation as if it were ON. I say typically because there are some cases where this may not be the case.
What does it mean when you unplug a device?
When you unplug a device, you are removing the plug from a wall outlet which means you have completely removed the device from any power source. This ultimately means that by unplugging something, you are completely removing it from power so it will not turn on.
Should I Disconnect my computer from power if the battery is full?
If you are asking if you should disconnect your computer from power once the battery if full, the answer is no. If you do so, your battery will keep discharging and charging. The number of times batteries can be charges is limited and if you unplug your computer every time it is full, it will quickly die.
What happens if you unplug an appliance from an electrical socket?
Unplugging an appliance from an electrical socket means that it no longer receives power from the wall. This means that your microwave will stop cooking, your TV won't turn on and your laptop won't charge anymore. You can still use these devices if they don't have a battery or a backup battery (like some laptops).
What is the difference between turning off and unplug a device?
By turning a device off, you are shutting that device down so that it will no longer work until it is turned on again. When you unplug a device, you are removing the plug from a wall outlet which means you have completely removed the device from any power source.
It is absolutely OK to unplug your PC after use, while shutdown like everyone mentioned of course. Maybe look for a power strip with a remote to help. I found a Belkin brand a few years ago that is able to support an ultrawide and 750Watt 12th gen Intel Rig. Before that I would use the switch on the power strip.