When I was a kid, I was playing one day outside and then later I realized there is an ant nest nearby and I saw that I killed some ants by walking near it.After that, I didn't want to kill any more bugs etc, so whenever I was walking on grass, I would always check the grass before me to see if there are any bugs in it, and only then I would make a step.
Yeah, it was very slow and inefficient, but it wasn't that bad because I was actively avoiding grass and this whole experiment didn't last very long either, maybe a couple of months.
Then I went back to stepping on the bugs.
I just today bought all civilization games with all DLCs for 15 euros on humble. Pretty good deal if you ask me, and I even dragged the slider all to the right for the charity, so 2k doesn't get any money.