I do believe in Karma, which is all about what goes around comes around. But if a bug is flying around me bothering me or biting me, I have no problem squashing it. If there's a bug, like a spider, sitting in my kitchen sink, I will try to let it outside gently by getting it to hop on a piece of paper. So in other words, if its not threatening me, I'll be kind. If I'm getting bit, I"m turning into a swatter and a killer. You sound like you might be obsessing over these things. I'm not trying to insult you, just concerned. Is it possible that you are suffering from OCD (Obsessive Compulsive Disorder)? One symptom is called magical thinking. In this case, you would be thinking that if you kill this bug that's annoying you, someday you will be attacked and/or killed by giant bugs who've taken over the earth, or by a swarm of small bugs. If that's how you're feeling, there are medications and behavioral modification remedies to help you with it. I have OCD myself, so I know and can recognize the symptoms in others.