“不值得”的意思是一件事没有价值，做了也没有好处，所以不应该去做。

The meaning of "不值得" is that something has no value and no benefit, so it should not be done.

我们常常说“不值得”来劝别人不要为小事生气或花太多钱。

We often say "不值得" to advise others not to get angry or spend too much money on trivial matters.