
1) Not a complicated answer. We don’t use our planet’s limited minerals like they’re renewable.
2) I don’t think you’re understanding how weapon bans work. The criminal has no weapons either, because there aren’t any. There are none to buy, there is no means to manufacture them, there aren’t any to steal.
When incapacitating somepony takes a great deal of effort, the desire to go ahead and do it is substantially reduced. And if you can’t be sure you can get away with it by stacking the cards in your favor, the probability of the act taking place is reduced as well.
The fact that weapons are illegal isn’t even important. There aren’t any. When you try to rob somepony in Equestria, the factors of break in and exit time, population, and the reaction time of law enforcement just means you’re more likely to get beat up yourself. Why do you think I got arrested so many times for? I don’t know how things are for you humans, but [omitted]’s not easy to pull off here.
3) You wouldn’t be the first pony to come to that conclusion. Is there anything wrong with that way of thinking, though? Batmare, were she real, is basically some rich filly living out a revenge fantasy over and over again to fill the void left by the death of her parents. Do the psychological implications of that matter if she’s stopping villains from taking the lives of others?
4) [Audible Sigh] Please clarify the nature of your aggression.
5) Animals are animals. They were around since before we were. Leave them alone and they’ll balance themselves. The reason that never works in your world is because you can’t ever seem to leave them alone, what with the pollution, deforestation, segmentation, poaching, and whatever you want to call this bright idea.
If an invasive species is introduced, massive, long term efforts are usually undertaken within days to remove them. That parasprite invasion was bad, but it would have been taken care of before it caused any long term harm, if Twilight hadn’t destroyed the town and nearly killed us all.
6) Not sure if you read what you just wrote, but it sounds to me like you got a pretty big worry for the future there. You could go ahead and start working on that.