Killing a goat is not sacrifice! It is murder! It is deliberate and cold blooded murder. I mean whose sacrifice is it?...definitely not yours, and the goat doesn't want to sacrifice it's life....So it is an unwilling victim.
Sacrifice would be giving away your one month's hard earned salary to the famine stricken people in the 'horn of Africa'.
PS: It's my opinion only....so neglect it if you don't like it...