Question

when you stop doing things for fun,you might as well be dead

Answer 1

前半句是：如果你不是出于兴趣去做事情

后半句中might as well 是“倒不如……”的意思

你根据上下文翻一下后半句

for fun 做的是状语成分 在这里,我觉得是翻译成“出于兴趣”