(I’ll write something here later.)
You don't want to brush your teeth at night because you're unable to commit to the fact that you're done eating for the day.
You're unable to sign a locked-in contract.
Like for a gym membership...
"One whole year?! How do I know I even want to be in shape in five months?"
NBC
A contract for a new mobile phone plan...
"Two years? But what if this year's new iPhone is awesome!?! I'll be stuck with this piece of shit!"
AMC