The cell gives observers a strong initial impression that it was intelligently designed.1, 2 (For example, see videos of touring the cell's machinery, of cell wrapping and DNA replication, and of flagellar assembly). This is relevant because the cell is a life-form.
This is a huge topic and BeliefMap will have a section dedicated to it.
[Forthcoming]
But so what if there were bad designs in life? Plausibly