Choice is a consideration of course, but there are some who appear to also be genetically and/or socially inclined to abuse alcohol and drugs.
These things appear to run in families as a sort of generational curse - perpetrating a familial cycle of sin. See:
Exo 20:5 I visit the iniquity of the fathers upon the children unto the third and fourth generation of them that hate me;
Exo 20:6 And I shew mercy unto thousands of them that love me, and keep my commandments.
Of course God judges us for our choices - so abstain from these. Get help if you need it.
AA, NarcAnon, etc
Eze 18:20 The soul that sinneth, it shall die. The son shall not bear the iniquity of the father, neither shall the father bear the iniquity of the son: the righteousness of the righteous shall be upon him, and the wickedness of the wicked shall be upon him.