“无脑的”的英语？

我正在接受着快乐不是无脑的愉悦.I'm accepting that happiness is not mindless joy.很久以前被堕落魔所驯服, 这种无脑的生物被当做搬运重物的工具使用.Asterian Beast Tamed long ago by the Fallen, these mindless creatures serve as beasts of burden....