it isn't worth it

it isn't worth it

1. Some action is not justified because it will not elicit a valuable or positive enough response. Mom can be so volatile, that's why I'm always hesitant to call her. I mean, if she's going to start yelling at me, then it isn't worth it to me.
2. Some thing is not as valuable or important as someone thinks. A: "Oh my gosh, I'm so sorry I spilled wine on your rug! I'll pay to have it cleaned!" B: "Oh, this old thing? Please, it isn't worth it."
See also: worth
Farlex Dictionary of Idioms.

It isn't worth it.

 
1. Its value does not justify the action you propose. Mary: Should I write a letter in support of your request? Sue: No, don't bother. It isn't worth it. John: Do you suppose we should report that man to the police? Jane: No, it isn't worth it.
2. . Its importance does not justify the concern you are showing. Tom: I'm so sorry about your roses all dying. Mary: Not to worry. It isn't worth it. They were sort of sickly anyway. John: Should I have this coat cleaned? The stain isn't coming out. Sue: It isn't worth it. I only wear it when I shovel snow anyway.
See also: worth
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • not for a second
  • not for a minute
  • not for a moment
  • aint
  • ain't
  • not for a instant
  • not for a/one minute/moment/second/instant
  • not by any means
  • by no means
  • lift a finger, he/she doesn't/won't