Most Helpful Guy
Age is usually something that goes with experience. Since you have a lot more chances to experience different things, and you gain more tools to gain more experiences as you age, usually. However, maturity, for one, is not necessarily determined by age. I would say that about experience as well. It's more about your environment, your upbringing, and your openness to new understandings.
Most Helpful Girl
Well, yes and no. Anyone of any age can have valid opinions on a variety of subjects. However, life experience does shape your views, so being younger CAN potentially mean being less informed, though not always. Being older can also mean being out of touch, but once again, not always. Some people gain wisdom as they get older; others become closed-minded and stop learning. I find it's usually best just to hear people out and judge based on the merits of their arguments.