如果你正在做一件你讨厌的事情，而且你并不快乐，何必呢？

If you are doing something that you hate and you are not happy, why bother?

youdao

一件最讨厌的事情需要他去考虑。

A most unwelcome event claimed his attention.

《牛津词典》

讨厌的事情在于，敲诈者开始借以要挟的把柄往往是事实。

The nasty thing about a blackmailer is that his starting point is usually the truth.

《柯林斯英汉双解大词典》

if you are doing something that you hate and you are not happy, why bother?

如果你做自己讨厌的事情，就会不高兴，何必呢？

怡人的的汉普斯特德 - SpeakingMax英语口语达人