Your post has made me reflect on the danger of procrastination. Sometimes we postpone important tasks just to carry out other more pleasant ones at the moment. When there is no alternative, we decide to carry out these pending tasks and we realize that it really would have been less expensive in time and effort to complete them at the time.
That's sometimes the case, for sure. Leaving things undone happens for many reasons, lack of time, bigger priorities, no funds or skills, lack of materials and tools, the weather and so on...and sometimes laziness too. I guess a person needs to determine what's most important and put their time into them which is what I do, prioritisation.