Ask HN: Content vs. Design: What Matters More?

Hey everyone! I've been bouncing between newsletters lately and noticed something. Some newsletters have super interesting content, while others just look really pretty. When you're thinking about hitting that 'subscribe' button, what grabs you more? Is it the meaty, good reads or the shiny, sleek design of the site? Honestly, I'm torn, and I'd love to hear what you all think. What's your deal-breaker: content or design?