Sunday hunting was originally enacted for two reasons. 1- It was a religious issue with churches. 2- Some believed it gave the wildlife a days of rest.
Both arguement are faulty. It exists in some states today simply due to pressure from the churches. Their agrument is it will increase Sunday attendance. It does not. If on does not wish to hunt on Sunday for a religious belief, then they simply should not hunt. Were it enacted where I live, I would continue to hunt if I so chose.