Why would Navy SEALs use drugs?

Navy: SEALs Tested Positive for Illicit DrugsAssociated PressMay 4, 2018

Navy official tells The Associated Press that cocaine is the drug found in Navy SEALs in Virginia.

VIRGINIA BEACH, Va. (AP) — The Navy says members of its SEAL teams have tested positive for illegal drugs.

The Navy released a statement Friday saying 11 members of its Naval Special Warfare units on the East Coast tested positive for "controlled substances."

According to a Navy official, the drug was cocaine, and commanders are investigating to determine if all the alleged offenses happened at the same place and time. go here for more

US Special Forces struggle with record suicides, report from 2014

Ret. Admiral William McRaven
No one – not the top warrior nor the highest star admiral - is immune to war’s toll.

“Ever since I’ve come back it’s been like that,” McRaven said later, during a brief interview. “I’ve told one story a dozen times and I still can’t get through it.” from 2015

There are a lot more report here, but, I think you get the point. If SEALs are using drugs, there has to be a reason for it.