The reason that many hunting scopes today are over 3-9 magnification with a side focus adjustment is because it provides hunters with a wider range of view and the ability to make quick, precise adjustments to the focus of the scope. The side focus design allows hunters to adjust the focus without having to take their eyes away from the target, making it much easier to track moving game.
While some hunters may prefer objective parralex adjustments, the side focus design is much more versatile and is well-suited for both long-range and close-range shooting. This is why it has become the standard for many hunting scopes.
However, it's important to note that different hunters have different preferences and needs, and it's essential to choose a scope that is best suited for your specific hunting style. Whether it's a side focus or an objective parralex adjustment, the most important thing is to find a scope that provides clear, crisp images, and that you are comfortable using in the field.