Whilst I understand peoples objections to the use of animals in every day products, its very difficult to get away from.... There is always going to be something that is in every day use that has something of an animal be that an insect or a four legged beast in it.... All cultures have their own idea of what is and what is not acceptable....
I'm quite confident that should a vegetarian or Hindu stumble across £50k of brand new £5 notes they would have no issues in picking it up and spending it... They might not spend it on lamb chops... But spend it they will... Such is human nature....