Laws of UX
Serial Position Effect
People best remember the first (primacy) and last (recency) items in a series. Place key actions and navigation at the start and end of lists. Mobile bottom tabs leverage recency.
In plain terms
People remember the first and last items in a list best, so put important things at the start or the end.
Why this matters
People remember and act on the first and last items most. Bury a critical action in the middle of a long list and many users — including those scanning quickly — will skip right past it.