At the risk of belaboring the point...

Micro -

What you are failing to understand is the fish we are fishing for have already made it past all the obstacles you mentioned, all of them.

At the point we attempt to catch the fish its risk of death or injury lies solely in our hands, mine and yours. The techniques we use to catch them has an adverse affect no matter what we use but we can MITIGATE the harmful effects by using 'common sense'.