@Wylie,
I see you still don't get it, or you are just being stubborn.
Going out of your way to squash a bug is not the same as cleaning a table and killing bacteria.
Tilling a field and destroying hundreds of bugs is similar, but that's not the premise with which you started this thread.
When I happen to kill a bug, I'm not consumed with remorse, but I only kill bugs inadvertently or if I consider them a nuisance or a threat.
When I was a young lad I deliberately killed bugs wantonly and with pleasure. I particularly targeted inch worms which were a blight on my locale. My favorite methods were dropping one on an ant's nest or on the surface of a car that had been sitting for hours in the sun. Simply squashing them seemed far too blunt.
This is the sort of things boys do, and although I had an artistic bent to my wanton cruelty, as it turned out, I didn't become a serial killer when I grew up.
Bugs are biological machines and it is tough to grant them any sort of meaningful presence, but they are alive, and there is something off kilter about deliberately and wantonly extinguishing life.
I was with you when I was a kid, but I don't think that says much for you.
Life abounds on the earth to such an extent that it is quite easy to consider it
cheap, but to varying degrees we all consider it precious.
Clearly, you and the very many who are like you are not horrible people because you like to squash bugs. Maybe by squashing bugs, you are exorcising violence that might otherwise be directed at higher life forms, even humans.
You should, as a rational adult, recognize that there is a difference between stepping on a bug you never saw while walking down the street, and crossing the street to stomp on a bug you did see.
Not, in my opinion, a huge disorder on your part, but you asked the original question and seem intent upon considering only one answer.
Bottom line: Kill them if you want, but spare the pollinators and the predators that offer no threat to mankind.
If you have to go mad murderous, focus it on ticks, leeches and other blood suckers. I would cross the street to kill a tick!