That's because "integral" would be understating it. Catholics consider the Eucharist the most important sacrament, at the very center of Christian life. Quite seriously the one sacrament to rule them all and bind them.
Which kind of makes my point for me, given how idiosyncratic Mormonism is. Meanwhile: imbibing is, in fact, integral to the belief system of what might be a plurality of Christians (Catholics, Lutherans and Anglicans).
Add Judaism to the roster as well; wine is an integral part of the Seder.
But hey, neither would be okay with imbibing to the state of inebriation, so the point that leading religions advise against mind-altering substances is still valid in... a technical sort of way.
Yes, I do remember when Yeshua Ha-Nozri transformed water into wine at the wedding ceremony in Cana of Galilee, he followed the miracle up by saying "please enjoy responsibly".
Paul, Solomon, and a few prophets weren’t too keen on wine. Jesus, the only omniscient one in the bunch, clearly anticipated this very thread:
“The Son of Man came eating and drinking, and they say, ‘Look at him! A glutton and a drunkard, a friend of tax collectors and sinners!’ Yet wisdom is justified by her deeds.”
https://en.wikipedia.org/wiki/Eucharistic_theology
(I'm well aware that getting buzzed is not by extension at the center of Christian life. The above comment was simply too ironic not to respond to.)