Brent, ‘why’ questions on grammar, individual word or verb usage are mostly going to be answered ‘because that’s the way it is’. That is the answer here.

In English we say ‘make a decision’. In French the verb ‘prendre’, which has many usages and meanings, is used - it ‘translates’ to English as ‘take a decision’. Just different constructs for the same concept. 

It could just as reasonably be asked why we say ‘make’ rather than ‘take’ in English, which is exactly what a native French speaker learning English would be questioning.

 https://www.wordreference.com/fren/prendre

Salut Brent,

The correct format is "prendre une décision"

Using faire would imply "to fabricate (make)" which is what I suspect you are suggesting.

Bonne continuation

Jim

You could simply ask the question from the French point of view: why does English "make" decisions instead of "taking" them? Agree with Maarten: this kind of musing leads nowhere.