I bought my first camera almost two years ago. It was the K-r. At that time I had absolutely no knowledge about photography, but after a quick research, K-r turned out to be the best bang for the buck (compared to nikon 3100/canon 1100D).
After about a year of shooting, I decided to upgrade and then I had a little dilemma in my head, whether I should change my "religion" or not.
Because I've found myself to be a prime shooter, I decided to stay a Pentaxian
(because Pentax makes some really nice prime lenses, if somebody didn't know). So I got myself a K5IIs and I've been a very happy user ever since
I never really cared about market shares, other people opinions, etc. That is not what photography is about