Let's say that every morning I go out and get a 250 ml coffee.
We can all agree that Mondays are difficult, so I might want a 300 ml coffee on Mondays. I could negotiate with the coffee shop to sell me a bigger coffee, or I could go to a different coffee place with bigger cups on Mondays, or I could accept I can't always get what I want.

Or we could make a law that defines a liter to be 20% bigger on Mondays. That's what daylight savings looks like to me.