Is Large Format necessary?

Hi all. I've been reading about the uses of medium and large-format cameras, and was just wondering if anyone (who really knows the ins/outs) has any opinion as to whether or not such high resolution is actually necessary in most common applications (like landscapes or fashion photography)

I just can't wrap my head around what you would do with all that detail, because I've never seen a large print that had anything that I would want to look at up close (unless it's just for the sake of avoiding pixelation on massive prints that people might be able to step right up to and examine closely).

Thanks! Hope this isn't coming across as opinionated or judgmental at all. I'm just genuinely curious to know if medium/large format has practical uses, or if it's a lesser-used medium for a reason. I wouldn't know.

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