Cosmology was the only physics class I ever dropped. Very interesting, but I got the impression that it is very disorganized as a field and (I felt) not worth t

Cosmology was the only physics class I ever dropped. Very interesting, but I got the impression that it is very disorganized as a field and (I felt) not worth the time given how little I was learning after spending all my time trying to put together piecemeal conjectures into a coherent understanding. Its bounds for acceptable error levels were also much wider than other fields in physics, which made it hard to ground your understanding in something precise.