smf30,
Spicoli used to drink Vodka "because he was thirsty" too. And anything else that got in his way.
And I can't count the number of times that he decided he had graduated from Alcoholism and could "drink like other people".
It's mind games they play with themselves. And it doesn't make sense to anyone but them.
You keep taking care of yourself and making your choices based on what's best for you.