My supporting POV on selfishness motivating human moral values

[smax]

Your spider metaphor doesn't work for me at all.
I welcome them in my house along with my many centipedes (all of which I have named "Bob.")
They are my commando assassins in a never ending battle against six legged invaders.
Sadly, many of them have to hunt in the open which leaves them vulnerable to injudicious squashing.
But never by me.
I do wish the web spinners would clean up their projects when they are done using them.

Well Julia, thank you for providing a selfish reason to counter my point about spiders. I did, however, introduce exceptions like you earlier in the discussion.