Answer:
Let's think about the benefits and downsides of annexing Hawaii:
Benefits:
The United States gained more territory.
The United States now has an important Naval base (Pearl Harbor, at this time)
The United States is now presenting itself as an imperial power (which, at the time was very important)
More merchandise such as sugar and tropical fruit can be grown.
Downsides:
The Native Americans of the land were forced out, although they peacefully ceded their land to the Americans.
The process of kicking out the Natives was without American government approval.
New discriminatory actions against the Natives.
With this information, you can decide for yourself. Good luck!
