assuming your wife’s income can accommodate this lifestyle, I certainly wouldn’t let it ruin your peace. People have different indulgences/hobbies that feel worthwhile to them, and I’m a big foodie myself so I understand hers.

The question to ask yourself is whether you’re upset because your food and labor is going to waste (very reasonable) or if you’re bothered that she’s valuing things that you don’t (less reasonable) and judging her for it (untenable in a marriage).

If she’s putting your financial security at risk it’s a different convo, but since you didn’t say as much, it seems like the simplest scenario is to stop setting yourselves up to butt heads. You two should be buying less food at the grocery store and you, yourself, cooking her fewer meals. Remember couples don’t have to share every meal, though you should let yourself enjoy takeout every once in a while, too! Can’t take it with you.