As a player myself, I can certainly appreciate the good intentions of resetting to try to let as many people as possible get the rewards as possible. However, that being said, the reality of these intentions have been pointed out in this thread by others: by intentionally resetting a hunt mark, you have chosen to interfere with the game play of other customers.

The most common anecdotal cases that highlight how this could be an issue are those enemies that can disable large groups with abilities, such as those that cause long-lasting petrification/sleep. Resetting does not remove these effects, and with a large group arriving, this could cause the people who were fighting it to not be able to participate (or fully participate) due to the hunt mark dying quickly. Even with a full group, bad timing could result in no participation when you and your full group was there and fairly participating before.

Resetting is a very temporary resolution that can have real impact on another group's game play, since monsters that are reset, in reality, do not go back to neutral. They are immediately attacked, which continues the cycle, only possibly excluding other customers who were able to make it in a timely manner.