If you have a way to generate a large stream of income it makes sense to delegate low-skill tasks and designate some additional time to your main job.
Which should leave you with more spare time to allocate however you'd like
Of-course if you enjoy doing any given low-skill task - you don't have to delegate it
There are several problems that make this less straightforward
most people receive salary and not hourly income. It's hard for salaried employees to generate additional hourly income.
And as a consequence people who receive the salary don't have visceral feeling that they are wasting their time when performing menial work.
For people who receive hourly income it also may be not as straightforward to vary the number of hours they choose to work.
Either because there is a demand to complete a certain piece of work with a given deadline
Or because there can be big lulls between projects, and it's not straightforward to just find the next incremental "hour of employment"
I believe hired help is a far more common occurrence in developing countries. Or to be more precise in countries where there are people with a high disparity in income
But that does not offer a solution for higher income countries
This also seems more common for people who actively feel the time constraint (higher level execs come to mind?)
They have to delegate to have any time left at all and so have a more visceral appreciation for value of time.
Check if there is research about how often contractors/people being paid by hour/ tend to outsource menial work comparatively to the salaried employees
related
Task Rabbit allows people to publish tasks and for other people to bid on them
wonder if they have any reputation handling ?
See EconTalk transaction costs