Do you know why we abstain from those foods?
1Co 10:31 Whether therefore ye eat, or drink, or whatsoever ye do, do all to the glory of God.
1Co 6:19 What? know ye not that your body is the temple of the Holy Ghost which is in you, which ye have of God, and ye are not your own?
3Jn 1:2 Beloved, I wish above all things that thou mayest prosper and be in health, even as thy soul prospereth.
Because we want to live healthy lifestyles to bring glory to God and honour His temple and to be the best sacrifice we can be to our God.
meats are unhealthy.