I myself have only been mucking around with them for a couple of years now.
I was a late starter getting my first pc when I was 30 (33 now) I mainly used to just play games or surf the net. One day I decided to open up the case just to see what it looked like inside.
I quickly shut it again because what I saw looked way to confusing to understand.
This led to more curiosity on my part and I soon found myself bying my first pc book which made things a lot clearer. From that point on I have learnt a hell of a lot about them, but I still have a long, long way to go before I can call myself qualified.
Hence the reason I am here