Is there any food you absolutely must make yourself?

I’m talking about foods. For example, I insist on making my own salad dressing, spaghetti sauce, pizza, ice cream, whipped cream, some soups, tortillas, mayo, and now cat food. The store-bought versions are just never as good. However, I like to buy crackers, a good cheese, and a nice bottle of wine, and I haven’t mastered Indian food so I dine out for that.

There seems to be a turning point where the cost in time and energy are offset by the quality you get from making it yourself, and it becomes worthwhile to do this.

Are there certain food items you absolutely must make at home or, conversely, must buy? What are they and what’s your motivation?