So, why does the texture matter? Well, it all comes down to the recipe you're using. If you're making a sauce that needs to be smooth and silky, tomato puree is the way to go. But if you're looking for a more hearty sauce with some chunk to it, crushed tomatoes are the better choice.
And then there's the flavor factor - tomato puree has a more intense tomato flavor, while crushed tomatoes have a brighter, more acidic taste. It's like the difference between a strong espresso and a refreshing glass of lemonade - both have their place!