I love drinking alcohol. However, I learnt early enough never to cajole or encourage anyone to drink as much as I do, haven developed a high tolerance after years of practice (lol).
There have been several instances where I've been persuaded to try other vices like weed and cigarettes, and I've been curious enough to try them so I knew early on to draw the line. I've unfortunately had to cut ties with people who constantly persuaded me to keep trying with these narcotics.
I'm thick-headed and flexible enough to try things but also disciplined enough know when it's not worth continuing.
I know others who say the same thing, love alocohol, try various drugs etcetera, I guess it's a choice people make and as long as it doesn't negatively impact on others then only the individual has to deal with the fallout.