I have no problem with hunting or killing. I find hunting/killing for trophies distasteful. I would not engage in that activity. But it is legal.
Personally, hunting game is a reasonable pursuit. It's a combination of outdoors activity and filling the freezer with good quality, lean meat. Unless you're a vegetarian, you support killing animals with your grocery dollars. Hunters just cut out the middleman...
And as far as killing people? I have no problem with the use of lethal force to prevent serious bodily harm or death. That lethal force often results in the death of the assailant. I don't feel bad for the assailant who tried to hurt/kill someone else. Their choice, so they must accept the consequences of an application of lethal force.