Your point about design from the beginning was not contested by me. God only gave meat to eat after the flood.
However, simply associating it with other things Jesus said about the original design does not address the issue, for the following reasons:
- In the case of the hardness of heart for divorce, Jesus said it was not so from the beginning. And He specifically said what God joined together let no man put asunder. Jesus clearly opposed divorce. This is in keeping with the statement in the old testament that God hates divorce.
- However, Jesus did not take the same stand with eating meat. In fact, while you contest that Jesus at the fish in Luke 24, he endorsed fish as a good gift a father gives to his children in Luke as well:
Luk 11:11 If a son shall ask bread of any of you that is a father, will he give him a stone? or if he ask a fish, will he for a fish give him a serpent? 12 Or if he shall ask an egg, will he offer him a scorpion?
13 If ye then, being evil, know how to give good gifts unto your children: how much more shall your heavenly Father give the Holy Spirit to them that ask him?
- Jesus taught people not to divorce, but gave fish to thousands:
Matthew 15:35 So He commanded the multitude to sit down on the ground. 36 And He took the seven loaves and the fish and gave thanks, broke them and gave them to His disciples; and the disciples gave to the multitude. 37 So they all ate and were filled, and they took up seven large baskets full of the fragments that were left.
- Jesus gave fish to His own disciples to eat:
Joh 21:12 Jesus saith unto them, Come and dine. And none of the disciples durst ask him, Who art thou? knowing that it was the Lord. 13 Jesus then cometh, and taketh bread, and giveth them, and fish likewise.
You have to account for these differences.