I was explaining this to my daughter in quite simplified terms the other day- we evolved to taste sugar and enjoy it because finding a sweet edible plant meant we had a source of energy to help us hunt that day. Pretty useful if you're a hunter-gatherer.
So we seek out sugar. Now we can get it whenever we want it, in much more massive quantities than we are supposed to be processing. Most of us are addicted. I'm not an exception.
Always spend the extra buck or two for the better sauces. Actually I've started making a mean meat sauce as I found a fantastic place to get red bell peppers (for a dollar more but huge difference); their sweetmess easily offsets the acidity of the tomatoes (although better sauces use better tomatoes or cook longer). Also don't overcook your garlic, it's sweetest when it's less cooked.