Why eat only what you kill yourself?

Today we learned that the founder of Facebook has set a challenge to only eat meat that he has killed himself. He started with a lobster and then has moved to a goat and a pig. Why is he doing this? He says that he likes to set challenges for himself. What is the challenge here?

Hasn't he set for himself an independence challenge? Doesn't he want to return to an earlier time when people took care of themselves for the basics of life?

The Amish  are noted for the things they give up and also for what seems to be hypocrisy and inconsistency among themselves. They do not like telephones but may have a neighborhood telephone outdoors for emergencies. They may use electricity for the milking machines but not have it in their homes. Why do they do this?

They do it to avoid breaking up family life and local community life. A telephone could remove personal visits. A car could mean travel away from a community.

I wonder if the founder of Facebook might challenge himself to avoid technology such as Facebook and email so that he could have real social interaction. He might meet his neighbors. He might find more meaning in life. He might slow down.