I Shot the Albatross

After I read through the part where the ancient mariner killed the albatross, which surprised the crew. I think of two reasons that can explain why the mariner killed the albatross. First reason is that, the ancient mariner was really angry about the weather condition they were facing, which prevailed their ship to caught in the seawaters. So, he killed the albatross in order to release his anger. The second reason is that the mariner killed the bird because he wanted his fellowmen to stop being superstitious and suspicious that whether or not the bird is the main reason that cause the extreme weather changed. Therefore, once he killed the albatross, the crew will suspect the power and ability of the albatross. However, I searched this question on the Internet. Some said that Coleridge wrote this situation, and there is no concrete reason why the ancient mariner killed the albatross. It was just an impulse, which made him do the hellish crime.