For example, if someone spoke in French, I wouldn't understand what they said. But if they spoke in English, I would.
I mean I understand that it has its use in naming desserts, but it's just not suited for day to day conversation.
Imagine this exchange:
Person: "L'eau est empoisonnée."
Me: "What the fuck are you talking about?" Takes a sip and fucking dies.
Compared to:
Person: "The water is poisoned."
Me: "Oh shit no thanks" Lives
See how confusing it is? It's just hard to relate to on a human level.
How do French people put up with this?
This is the reason why France has lost all wars in history. The French soldiers can't understand the commands because French is such an unintelligible language. If Napoleon had spoken English like a normal person, we would all have been speaking French now ... if it haven't been for Napoleon having the sense to speak ordinary English.