I agree everybody should know the basics of HTML/CSS to become what I call "semi-technical", even if you're not attempting a startup. You might find you have an

I agree everybody should know the basics of HTML/CSS to become what I call "semi-technical", even if you're not attempting a startup. You might find you have an artistic flare for digital design, and suddenly become that much more marketable. That being said, why would you want to found a startup if not to build something cool and get people interested in it? If that's not your natural passion, it's no coincidence you don't already have skills a technical company would find valuable.