I too hunted deer, moose, goat, etc with either a 2.5x, 4x, or 2-7x scopes as well as non optical sights for sixty years.
People who hunt groudhogs, rock chucks, and prarie dogs use much higher magnifications.
Since I was the guy promotig a hunting rifle class starting about twenty years ago, maybe a little history would help. I know it won't change some minds but here goes.
To build a case for a new class that might attract shooters I managed a postal match called 'Light Production" for factory rifles under 9.5 pounds with scopes limited to 9X. After three years over 40 shooters had competed in at least one of the matches. Some had complained about the scope limit. I sent out a questionaire to all who had competed asking if they would like to leave the limit at 9x or raise it to 24x ( 24x Bushnell 6-24x scopes were selling for about $100 (now $170) where as higher powers cost a lot more -- then and now). A majority of shooters responded and the overwhelming vote was to go to 24X. (There was an earlier post on another thread mentioning this poll and claiming the results favored limiting to 3-9x. This is not true.)
Since most of the shooters who were williing to actually shoot, instead of only talk about it, wanted 24X that's what was in the proposed rules presented to the board in about 2010. Although I argued against it, the board removed the limit on magnification in the approved rules.
Official proposals to limit the power to 9X have been considerd by the board at least twice in the last 15 years, and after arguments, rejected by strong majorities. I won't attempt to list the reasons.
John