Years ago I climbed Mt. Adams in Washington state with a friend of mine who invited along his brother. For the whole ascent, his brother complained about the weight of his pack. When we reached the summit, he pulled out a 12 pack of beer that he had lugged to the top. I looked on in horror as he cracked open the first of several beers that he consumed. He berated us repeatedly for not guzzling beers with him as he had gone through all the effort of carrying them for us.
I never ever climbed with either of them again.