In other words, your parents hardly cook at home. You are too old. Did your family almost eat takeout in recent years?

Since your parents can eat takeout, why don't you follow? And you think fast food is unhealthy, then find a regular high-end fast food. Your parents have plenty of money anyway.

But then again, you'd better cook by yourself, at least it's the most basic survival skill. You said nobody asked you to cook. You can ask your relatives for advice. Eating and drinking at a relative's house is not only troublesome, but also embarrassing. If you ask them for cooking skills, I'm sure they will be happy to guide you.