The Word of God says...Without blood there is no sacrifice. In the old testament they sacrificed animals as an atonement for sins...but also as a foretelling of the sacrifice Christ would make on the cross for our sins ( the animals had to be perfect without spot or blemish...just as Christ is perfect)...animal sacrifice was imperfect..it needed to be done over and over..but once Jesus came and became the sacrifice for us...animal sacrifice was no longer needed. Jesus did it all....
The Jews wanting to reinstate animal sacrifice to me is just another step to the final days.
Those who "sacrifice" (ie carry out ritualistic murder for bloodsport) others, are not noble -- they are blood lusting psychopaths, who get away under the cover of religion. Islam is tops in this, followed by some Jews and some phony Hindus. Probably some Christians too.