As long as whatever your custom is does not control you, you are fine to have strong drink within reason or the milder ones, also within reason.
Nothing by entering the body will corrupt anyone for it passes through the body and then out through the toilet.
Idk about nothing because some things hit the very spots in the brain that control our thought processes, actions, and reality. Meth enters the body, processed through the body and it has corrupted many in addiction and criminal activity as they race to get high again.
But on alcohol, Paul told us
"I have the right to do anything," you say--but not everything is beneficial. "I have the right to do anything"--but I will not be mastered by anything.
Some people have genetic mutations passed down from the parents that contribute greater to alcoholism. So not only does that increase the chances of being mastered by it but decreasing the beneficial factors that could be present, if any.
If we are of the category where it may not master us then we must ask, is it beneficial. Does it bring glory to God? Is it moral, immoral, or amoral?
I could say it is amoral as it in itself doesn't have a moral command other than do not be drunk.
So alcohol in itself is amoral but what we choose to do with it can be immoral or moral. Moral in the sense of permissible under such conditions.
I usually get most of the questions of is it beneficial answered by asking myself does it honor God or bring glory to God. Then I judge its importance or benefits. As in is it healthy, good for me, or good for others around me.