Honesty and your parents

Due to several conversations I have had this week I am inspired to ask the question: how honest are you with your parents? If I was to give a percentage I would say that I am 85% honest or upfront with my dad. I don't talk about everything with him, but I do include him in most of what is going on in my life. It has come to my attention that there are many people that lie to their parents ALL THE TIME or they keep major parts of their life hidden from them. I am talking about ADULTS. People who can join the armed services, vote for president, drink legally and they still lie to their mommy and daddy about having a few beers. I don't get this. What are they afraid of? It seems sad to me that they feel they have to hide their true selves. Aren't parents supposed to love you despite your shortcomings?

Percentage-wise, how honest are you?

P.S. I do have to say that there are some people that are TOO honest with their parents. They tell them everything and I mean everything. One of the best things my mom told me was that she wanted me to feel like I could talk to her about important things, but she didn't want to know everything. That was what my friends were for. She always told me that she didn't want to be my friend (and I don't mean that in a bad way), but my mom.