you haven’t had fun on this planet until you've gone hunting for invasive hogs in florida or texas. stars, night observation devices, suppressed semiautomatic rifles. regardless of your stance on guns or killing things almost as smart as humans, you should give this fun and useful activity a try sometime. you’ll learn some skills and make solid friends along the way.
I've spent time in the past shooting feral rabbits, foxes and cats here in Australia, which do immeasurable harm to the native ecosystems. It can be a fairly engaging activity, but it does pay to keep in mind that it's not the animals fault that they're born into the environment they're in, and as such you do try to minimise the level of suffering around it (i.e. I'm not a fan of people bow hunting which isn't an instantaneous kill). I suppose it helps to keep a level of mindfulness around what you're doing and remember that causing unnecessary pain is something to avoid.