User blog comment:Lancer1289/Are People in Multiplayer Lacking in Intelligence?/@comment-4118072-20120728184413/@comment-737801-20120728192912

If you mean explain why they do it, then I don't know.

If you mean the circumstances then I'll try. When someone goes down, even if there is a teammate next to them, they will still use their medi-gel to revive themselves.