Serious [Debate] Is it unethical to eat meat?

This is a topic which I could understand the views from both sides as my parents are against eating meat but they have always gave me the option to eat meat, and I think well if the animal has already been killed its happened and there is no point wasting it as that would make the animals death even more pointless but i don't agree with some of the methods such as halal at least make the animal feel no pain that's the least you could do for them isn't it ?