Dwarves who only play 1 class, why?

Let me be clear, I'm not saying it's wrong or passing judgement in anyway, no sir. I'm a darf who play every class, and I find each class being so fun to play. I started playing Driller as recommended by my friend. Then once I finished my first Driller promotion, I switched to Scout and that opened up a whole new horizon of fun, and so on and so on. Each one is so unique and interesting to play, with each having different play styles and sets of guns to play around with, not to mention all the different OCs to experiment. Sure, after a while, I settled on certain OCs with certain guns (tho I still switch them up every once in a while just for fun :D), but the excitement and variety of this game is honestly incredible.

That said, I am curious, why do some of you stick to just one class? You're missing out on so much content and fresh experiences by not trying the others :D!