I think i might have a theory!
I think those with Se as a dominant function may be more prone to use drugs.
Se is the process where you process life through your experiences. It is the ability to be keen, to what is seen, smelled, touched, heard and tasted. It is energized by experience, and it is the function which allows one to "live in the momment"
-mypersonality.info
"sensations" seems to be the definition of Se... and drugs are a type of sensation.
I have seen a few examples of this. My dad is a heavy user who is very addicted to drugs- he is ISFP. Fi-Se
Another is my ENTJ mom who's 3rd funtion is Se. She used in her teen years... but yet she has given it up.
it could be the combo of Fi and Se or something such as that. drugs could be addictive to any person, if you ask me, but if i had to list types, i'd go by Se and maybe Fi... maybe
I do not wish to offend, so if i have, i am sorry.