Here's an argument for DST I haven't seen yet - circadian rhythms. Forget about "maximizing daylight."

Your circadian rhythm is actually mediated/regulated/communicated to every cell in your body by a diurnal oscillation of YOUR BODY TEMPERATURE, which is coolest around 3am and warmest around 3pm.

These times just so happen to correspond with the times of coolest and hottest surface air temperatures on earth - and it's not a coincidence that our bodies evolved that way.

Now, in the summer, the hottest time of the day is actually LATER than it is in the winter, since the sun spends more time in the sky and the earth has more time to heat up. So it makes sense to align our circadian rhythms with that by springing forward one hour before summer, and then falling back one hour before winter - when the hottest time of day starts to edge earlier.