My question is, is the use of the word "hence", used in it's most common sense as an alternative to "therefore", strictly acceptable in English usage in the following example:
I like bananas, hence why I eat them.
I see a lot of people using the word "why" after the word "hence", and I have always considered it, at the very least, inefficient use of English. Happy to find out other views. Many thanks for all comments.