Growing up, there was always a SLR or two around. Thanks to my father's interest in gadgets (my mother would say junk) we had all sorts of stuff lying around often never to be used so I could grab whatever I was interested in and play. It was a very steampunk childhood and probably a reason I knew from very early age I want to be an engineer.
In the 70s and early 80s he used a rather plain Practica mostly with a 50mm lens but had a couple of rather dim teles and one weird looking fisheye. All that was either lost in one of many cleaning actions or is still somewhere in a pile of other stuff no one can be bothered to touch now.
In mid 80s he got a
Nikonos V for work and that was the camera I saw used most (and used myself) while living with my parents.
Fast forward to 2000 and I'm freshly employed, and feeling it's only normal that I should have a camera. Not just any camera, but a digital camera.
So I got a 0.8mp Mustek
The brand I barely knew for cheap-ass scanners so I had to search to check whether they actually make cameras...
I had that barely usable gadget for a year or so until I lost it while commuting, which was welcome, as I immediately got something better, and then again going through a bunch of compacts (last one being HP R717).
All that time I knew I wanted a SLR but didn't want to deal with film and development. The convenience of pocketable camera, practically unlimited capacity and immediate availability on computer was too high. I was willing to forego pocketability but not at the price and capabilities of DSLRs until 2007.
I knew about the brands in the market but had no preference. In those times there were actual physical cameras in actual stores so I could go around and touch stuff and form a sort of opinion on what I saw.
So, K10D looked and felt miles better that anything else in that price range. Nikons looked plasticky and hollow, Canons the same as Nikons. Once I dug into specifications it got even clearer - while Pentax crammed everything and the kitchen sink in their cameras, Nikon stuff was crippled until reaching a significant price and Canons I couldn't even figure out*.
However even K10D was out of my budget so I went with K100D Super and dual kit lenses. Have it and love it to this day.
It was a spaceship in its segment - once I compared the feel, features and prices there simply was no option B.
After that all Pentax stuff I bought sight unseen. Never disappointed. K5II & K3III both exceeded my expectations. There is something about density of these cameras that feels reassuring.
The thing I learned to expect and respect from Pentax was, they might not have the best this or that, but what they had, they gave to you. There was no "just for a few hundred more", or "think of it as a starter model" or the most ludicrous "and then you move to L glass".
I don't know w/hat the future will bring with advances in mirrorless and computational but I'm good with what I have now and see no reason to look elsewhere.
* - thing about Canon that bugs me is that I never felt I want anything from them. I understood the segmentation model, I understood the appeal for professionals but as a hobbyist, absolutely nothing in their low to mid range ever caught my eye. Holds to this day - even with significantly more disposable income and bigger appetite for higher end stuff I just ignore Canon. I also never met anyone non-professional who shoots Canon DSLR. What am I missing here? Am I blind to something obvious to, apparently, 50% of market?