I don't know. That's all I have. I hate the animal sacrifice and don't understand either. But I am grateful Christ came.
I guess, if we can look at it differently than we did as a JW, and consider Jesus was actually God in man's form, it was the ultimate self-sacrifice. If God has come and sacrificed a part of himself, then it doesn't seem cruel to send Christ. It seems like a parent, sacrificing for our children. We do it willingly, no matter the cost to ourself! If we can see it that way, it reveals the deep love God has for us. He stepped up and it did it for us by taking something from himself. I never thought of it like this until you posted this question.
As far as animal sacrifices...I never understood that. But it also makes me ill to see shows or read articles on how the meat on the shelf in supermarket gets there! There is so much cruelty in it's manufacturing. It sure smells good though when I pass a steakhouse and they are grilling! It makes me think of how the fat smoked and was a pleasing smell to God. I don't really understand the need, but I also know the lifestyle back then was so different than today! PETA wasn't around, although God did decree that man was to care for his domestic animals and help his neighbors animals that were in distress. Animals were highly valued...I guess it was a great donation/sacrifice of their livelyhood or family to give it to God. It sure makes it wonderful that Christ ended it. Although the sacrifice of the Lord tugs the heart and hurts worse than any animal sacrifice could hurt our heart, in my opinion.
I hope my thoughts have helped a little. I know your post has helped me! It made me think about Christ differently and understand God a little more this morning! I hope you get more helpful comments...I'll be back to check! Keep praying and asking for the Spirit to lead you. He can take you places no other person or their ideas can go! He can make your heart understand. It takes time though. It hasn't come to me quickly. But when I get a "revelation" or new way of understanding that is different from what we were taught, it really makes sense and I can see scriptures differently. I don't tear apart each verse but am able to read it in context...which the Society claimed they did, but now I know was a lie! They twisted so many scriptures that it is shocking when you see what the bible really said!
P.S. Get a new bible! I love, love, love the side by side translations of four different versions I bought! It was my first non-jw bible and I felt so guilty standing in the "religion" section at the book store. I was sure I would be caught and get in trouble. Silly fear of man! It was the best purchase! I love comparing how the different versions read and get a better understanding of what the origianl writings were trying to convey. It's nice to be able to compare rather than to be told what we must accept! Let your mind explore the possibilities and process all the new information!