am wrote:
Subject says it all. Why do the landings for night currency have to
be made to a full stop?

IIRC, the reasoning is due to the lack of overall perspective of the
airport environment at night compared to day. Everything that is not
lit disappears, so it is beneficial to have additional experience in
that environment. Perhaps the FAA expected pilots to practice taxing
after each landing, although they did not require this.

I've heard of students who received their primary training at night, and
while they made great night landings had a lot of trouble at first
during the day, so your mileage may vary.

The simplest way to get your landings to a full stop is merely due stop
and goes on a runway with suitable length (with tower's permission as
applicable).

Taildraggers need landings to a full stop during the day to maintain
currency.