I'm not saying you can't be good at two things. I'm just saying that if you spend 8 hours a day specializing in one thing, you will be really good at that thing

I'm not saying you can't be good at two things. I'm just saying that if you spend 8 hours a day specializing in one thing, you will be really good at that thing. Designers think about all sorts of things that aren't on programmers brains. I haven't studied the history of design and UX experience and theory. I also don't want to sit around in adobe designing mock-ups all day, that's why I am a programmer.