Who wants a banana flavored Twinkie? Not me.
Now banana twinkies may have been huge in the 1930s but we were suffering from the Great Depression then. Hardly a time of culinary excellence. The switch to vanilla is just another thing we can thank the Greatest Generation and their war for.
Not So Fast 
“But a banana shortage during the war forced Hostess bakers to replace it with the vanilla flavor.”
Makes you wonder what they needed all the bananas for during the war…
The war monkeys, obviously.
I think the Germans hated bananas and that’s why they were sinking the merchant convoys.