My first interest in computers, programming, etc. was video games. It made for an obvious choice when I went into college. A Computer Science curriculum however has much more to do with math than video games. Conceptually there is some overlap, but most of what you learn and do is more like math than anything most people would associate with video games. That is a major weed out factor in would-be CS graduates. You like video games or computers? Great. You like thinking and learning mathematical concepts? No? GTFO.