not worth while

not worth while

Not at all beneficial to one; a waste of one's time. I spent the entire day pouring through books in the library, looking for a great reference for my midterm paper. Turns out it wasn't worth my while. It's nothing personal, but it's just not worth our while to spend so much time and money training someone who is planning to leave the country next year.
See also: not, while, worth
Farlex Dictionary of Idioms.

not worth one's while

not worth bothering with; not worth spending time on. It's not worth my while to discuss it with you. Don't bother trying to collect money from them. It isn't worth your while.
See also: not, while, worth
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • a change is as good as a rest
  • pour (something) off of (something)
  • bargain over (someone or something) (with someone)
  • at the end of the day
  • pour oil on troubled water
  • pour oil on troubled water(s)
  • pour oil on troubled waters
  • pot luck
  • a good spell
  • be in a dream world