In film Avengers: Infinity War we see that all members of the Black Order
are dead when Thanos snaps his fingers. But we can assume that it is possible for them to also randomly disappear after snap if they were still live.
If so - why are they helping him? When Thanos
snaps his fingers he could also be randomly chosen to die, but he has the Infinity Gauntlet, he can resurrect himself after that. The members of the Black Order couldn't.
Does Thanos ensure that the Black Order will be omitted by his actions or are they rather fanatically devoted to Thanos's mission and also take the option that they disappear? Why somebody knowing Thanos plan and his random killing procedure still want to serve him. What're the benefits?
Do we know any motivation of that devotion in comics?
P.S. It's not question about who decides which half od universe will die but why people who know this plan and also can be effected by this plan, still want to serve Thanos.