Once that phrase is uttered, ‘later’ becomes a never ending date.
The task will remain stuck somewhere in your brain as something to be done, but now never being a good time to do it.
It will eat up cognitive capacity and tire you out thinking about how it needs to be tackled eventually.
Either deal with it when you can, delegate it to someone else or decide not to do it.
Later is a date that never comes.
It’s also the favourite day of our excuses.