Drehgunklew

Leave if you want to leave, but leaving a place where people are willing to talk to you about your problems and potentially help you feel better isn't going to help you.

Believe me I know. But I'm pretty sure that I don't dare to talk to people about this...

Then why not take a break? Life is ever-fluctuating. Take a healthy break so you can deal with whatever 'this' is, and then maybe once you've overcome it, or, you're more willing to share it with friends on here whom you trust, you can come back. It doesn't have to be 'I'm leaving forever' or nothing.