I did not think there was a state that you could legally shoot someone if you were not in fear for your life or someone else's.
And, of course, Texas, under a variety of circumstances, some very specific, but even for such things as the protection of property where you feel shooting is necessary because you otherwise will not get that property back.
Here is an example. A thirteen year old kid was stealing poults with a buddy. The owner of the chickens shot and killed the 13 year old while he was attempting to flee with the owner's property (at night). The shooting was legal. The kid was even shot in the back which was also legal becasue first the owner of the chickens was justified in his use of lethal force despite the fact that he was not in fear for his life or the life of another human.