We all wish that we had more time in every day. And yet we're stuck with a fixed 24 hours and only so much can happen within those 24 hours. And thus every minute feels precious and we throw around lines like "Life is too short wasted on the young" or something.
And thus everything that occupies your time with things that you don't really want to do seems almost criminal in nature. Such time seems to be stolen from us and we're never going to get any of it back. And so we try to make the most of the next day or the day after that and the cycle just keeps on going on and on and on.
And that's partly why multi-tasking seems so essential these days as a way of further optimizing our use of time. But it's not like we can actually do more than one thing at a time - at best we rearrange the steps of multiple tasks into one process and try to sequence them as best as we can. We still get the same amount of tasks completed at the end of all that (or usually a little less), but at least we have given ourselves the perception of having done more.
Not quite Milton's Sonnet 7, but the first few lines have a nice ring to them.