0 used to make a suggestion or to express agreement:
Why not use my car? You'll fit more in.
"Let's go out for an Italian tonight." "Yes, why not?"
1 used for making a suggestion:
If you’re so unhappy, why not leave?
"Do you want Italian food tonight?" "Sure, why not."
NOVÉ SLOVÁ
European
May 10, 2021
SLOVO DŇA
Shimmer
why not...?