Someone may intentionally use alcohol to create conditions in which it's easier for them to commit sexual assault

The use of alcohol create an effective or easier situation for a perpetrator to commit sexual assault , the reason being because this substance will inhibit one's ability to resist the sexual assault and it is very likely that they would not even remember assault or who assaulted them for that matter.

Explanation:

Drugs and alcohol are always used as means to make someone vulnerable and impact their ability to fight the assault hence putting them in a compromised position, where they can do anything or remember anything.