(1) I drink once every half a year. And even then, I only drink if I have at least 2 people I can trust. I'm a light weight.
(2) I've never had a problem with alcohol consumption.
(3) Alcohol is definitely a problem when you are called by the police at 3 in the morning to come bail out someone you know who had been drunk while driving. He was so drunk, I had to help him out to the car... and this was several hours after his car ran into a poll and the police arrived.
Disclaimer:
Occasionally, owing to the deficiency of the English language, I have used he/him/his meaning he or she/him or her/his or her in order to avoid awkwardness of style.
He, him, and his are not intended as exclusively masculine pronouns. They may refer to either sex or to both sexes!