Why are virgos so nagging and controlling?

they always try to get involve with everything like the world would fall apart without them. my mom is a virgo and she is always in my problems when i dont need her and dont ask. and they criticize everything i hate talkin to my mom about stuff because i know she's gonna criticize the hell out of what i said. they worry about alot of pointless stuff too. they talk about people like were so suppose to be perfect everyone has flaws thats just how **** is. but when you say somethng about them they get mad as any body else but yet they steal treat others that way. why