That's because we are working hard to live a more agrarian lifestyle. And to do that, you have to "make hay while the sun shines."

That little proverb was first recorded in 1546, in John Heywood's "A dialogue conteinyng the nomber in effect of all the prouerbes in the Englishe tongue" (This is the updated version.)  Heywood wrote:

Whan the sunne shinth make hay. Whiche is to say.Take time whan time cometh, lest time steale away.

Back when Heywood wrote down that little pearl of wisdom, every Medieval farmer knew that if the hay was ready, it was time to  cut it down, dry it, and gather it in order to feed their livestock throughout the winter. Not to do so was certain death, for without the livestock, they would potentially starve. (source)

Of course, with the advent of "progress" we now live in a society in which nothing is really that urgent to most folks.

If you need to feed your livestock, you go to the feed store. If you need a gift for someone, if you put in a little forethought, you can order it online. If you've waited until the last minute, you can run to the store on your way to the party. If you need to feed yourself, you go to the grocery store or to one of dozens of restaurants. If you don't want to get out of your pajamas, you can even have a hot meal delivered to your door in most places. If food in your fridge goes bad, you simply toss it out. If you need to stay warm, turn up the thermostat.

All of these things are more recent developments, of course. In days gone by?