Are parents suppose to tell it like it is?

Both my parents are honest and unapologetic. I can count on them to be honest. They tell us the truth when we wanna hear it or not. They can be blunt and be offensive but I know they wouldn't lie to me. They're not afraid to tell me what I DON'T wanna hear. My dad would tell me, "Life is hard and it's suppose to be hard. It gets you to work harder."
My mom said, "It's okay to make mistakes. We're suppose to make mistakes. That's how we learn in life and you can't expect to live in a would without making one."
Those are examples of things I DON'T wanna hear. I HATE making mistakes, get angry and want things to be perfect and adult life isn't what I expected.