Cain, there's something I've wanted to get your take on ever since that old Rob Lister thread.
I often take a hike in a nearby forest*. It's impossible not to wipe out lots of spider webs that cross the trails, especially when one is the first hiker of the morning. I assume that some (all?) of those spiders are killed by my actions. Whereas I could choose to walk on the street and not kill spiders.
Do you see this as a similar ethical situation as eating animals? (I do. A little worse actually, because my DNA isn't driving my behavior.)
* During which time, I'm almost invariably pondering, what would Cain think?

(True, despite the wink.)