Anyone choose to pay penalties instead of quarterly taxes?

[Chris Calabrese]

After my first year of self-employment, I have found out that the interest rate on underpayments is currently only 3%. Does anyone intentionally not pay quarterlies, knowing that they can invest that money and make more than the 3% during the year? Obviously, you would need to plan even more carefully to ensure that you could afford the whole payment next April. What other considerations are there? I've never heard this discussed, which means that it's either a dumb idea and thus no one does it or it's obvious and everyone does it.