I am not so sure about the "sunlight" and it is easy to say we shouldn't "bother" if we have enough food, shelter, and are not sick, but yeah.
"It's a convention," said Anthony Carling cheerfully, and not a very convincing one. "Time, indeed! There's no such thing as Time really; it has no actual existence. Time is nothing more than an infinitesimal point in eternity, just as space is an infinitesimal point in infinity. At the most, Time is a sort of tunnel through which we are accustomed to believe that we are travelling.
"There's a roar in our ears and a darkness in our eyes which makes it seem real to us. But before we came into the tunnel we existed for ever in an infinite sunlight, and after we have got through it we shall exist in an infinite sunlight again. So why should we bother ourselves about the confusion and noise and darkness which only encompass us for a moment?'"
From "Into the Tube" by E. F. Benson
I would hate to have meetings with him. Never know when he’ll show up. Actually, time have very definite correlation to physical movements of the the universe. The time it takes the earth to orbit the sun, the time it takes the earth to make a rotation on its axis, the time it takes the moon to orbit the earth. Humans have figured out how to mark these occurrences in various ways since the dawn of civilization. From sundials to Inca calendars to atomic clocks, all of them work off of natural occurring phenomena.
Ah, but space and time are more than infinitesimal points.
Physicists with a sense of humor say time keeps everything from happening now, and space keeps everything from happening where they are.
Mathematicians and others who have been led astray by Einstein’s thought-experiments talk of a curved space-time and imagine it as a peculiar-looking trampoline.