Yes some people lie about their age...but overall,it doesn't matter. The only time it actually matters a bit is when you are trying to truthfully answer a question,and then you see that the age doesn't align with the level of life experience the user has. That's when its just annoying. I usually don't even want to give my opinion to users who do this. Its one thing to not put your photo up,but to lie about your age does affect the answers you receive.