Quality Control
Time, money, quality - pick 2. Or aim for value.
If you want quick results, hire a team of experts at a big expense.
If you're on a budget, interns will save you money but take longer.
If you want the highest quality, it will take time and money.
As someone spending time and money on a project, you should understand the purpose of your work and seek to produce the most valuable outcome.
A premium product goes through many design and development iterations to reach it's final form.