You obviously have prejudices that aren't consistent with the Bible.

No, eating meat didn't cause mankind to live much shorter lives. Do you see vegetarians living to 500 years old? No, you don't.

God gave mankind permission to eat meat because eating meat is good. God designed us with teeth that help us eat meat.

The earth isn't 7,000 years old. The scientific evidence indicates that the earth is billions of years old. The Genesis account wasn't meant to be a scientific paper. It lists the creation elements as opposites: light & darkness, male & female, plants & animals.