Terminal block or bus bar?

So I see a lot of terminal blocks in use here but for the 12v side I was considering doing a bus bar. Is there a reason people use terminal blocks on the electrical side over bus bars? A bus bar just seems more straight forward and efficient when trying to share out 12v to everything.

I searched and didn’t find much on the topic.

Sure, sounds like fun!

bus bar

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I’d gap zapped on that one…