Well, to be blunt is say you've been a consumer of SO. There's nothing wrong with this but I'd argue that if you don't have 15 rep after 4 years you've been paid back with the knowledge you've gained.
If you can't find a way to get 50 rep on SO get 200 on any other exchange site and that will credit you 100
If you can't find a way to get 50 rep on SO get 200 on any other exchange site and that will credit you 100