A basic .22 is a fairly low powered weapon, but a .22 Hornet or Magnum, or a .223 is a nice piece of gear for anything other than serious game. Hollowpoints are crap too, unless you're talking about things that don't move at close range.
My pick would be a .223 for general use, they're powerful enough, and very accurate. Then a .308 on the side for the serious stuff when you need range and power.
As for those who are against hunting, you're entitled to an opinion. I have two rules that I like to follow.
1) Only hunt animals that are considered as pests - OR
2) If they are not considered pests, they must be at least in plentiful supply, and be shot for the purpose of eating.
I would never hunt anything endangered, inedible, simply for the purpose of killing it.
As for this quote: You are welcome to move to a place that has a broad range of enjoyable activities that don't involve ending a living being's life in exchange for your personal satisfaction.
I trust you are a vegetarian? I would consider the [often relatively inhumane] practices of killing animals in abattoirs to be completely and utterly involved in the ending of a living being's life in exchange for one's personal satisfaction.
Despite the incredibly obtuse issues something such as hunting presents, for those of us who were not brought up in cities, as hard as this may be to comprehend, it represents a part of OUR cultural heritage. Generations before have done it, and the process of hunting for food is something many may never understand fully.