This is something I've been thinking a lot about recently but I'm still not sure what is right. My rule of thumb has been that I'll kill any bug that is infesting my house or causing a problem to my health. Like I would kill termites or bed bugs if I had those, or like a leech or a tick. But recently I've been getting a lot of flies in my apartment and while they are technically "infesting" the place, they're not doing anything to harm me, just annoy me. Is it wrong to kill them?
Also I would like to say that if I encountered any of these bugs out in nature I would leave them alone and not harm them, this is only in the context of a threat to your sanitation or home
I think you're good. I know I kill roaches and mosquitos, fuck those things. I try to put everything else outside if possible, but I know flies are a nightmare to catch and they just will not go away if you have a bunch of them. (Growing up next to a dairy farm sucked, and, actually, is part of the reason I'm vegan.) I wouldn't think you're less vegan for killing flies infesting your house. I get that it feels bad though, of course it does, especially since they're not really harmful other than being annoying as shit. It's a bit of a grey area, for sure