Whether on a 1/4 acre or 1,400 acre property gates must be left the exact way that you find them. Open then leave open, closed, leave closed, latched exactly the same way you found them.
Many people when hiking in rural areas unfortunately do not know proper gate etiquette. This is why more land owners are posting their property's.
It is not for the vistor to need to know why the property owner wants the gate left open or closed. Just to respect the property owner's wishes.