Pesky Grammar

Why do European languages get so finnickerty about grammar? Logically, "I go shop yesterday; you no want eat fish; he no-see mountain?" are much easier and more consistent phrases than ruddy old English. Of course you want your grammar like "I couldn't have had time to have been able to think of how we ought to have said it" to remind us nostalgic souls of how our language came to be. But when you have such an array of characters and dialects, you are spoilt for choice for all kinds of historical info that grammar becomes as unimportant as communication itself.

Still - I was given a top emblazoned: "Zhongyu is a best friend that you best selection!".
I'm yet the only one to find it funny. Everyone else who speaks English has no problem understanding the meaning.