At what age did you find out that santa is not real

For those who didn't know... Sorry. Also your parents lied to you for your whole life.

I was in like 6th or 7th grade, and literally I questioned everything. One time something was in a newspaper, and I was like, "Nope, it's all fake."

So what age did you find out? For those who didn't know until now, then how old are you now?