Which is better 300 DPI or 1200 DPI?

I'm curious, could you please elaborate on the merits of choosing 300 DPI over 1200 DPI, or vice versa? As a cryptocurrency and finance professional, I understand that clarity and precision are crucial in our field, but I'm not entirely sure how DPI applies to our industry. Is there a specific use case where one DPI would be more advantageous than the other, or is it purely a matter of personal preference? I'd appreciate your insights.