Are you suppose to give meals to guests?

Last week my aunt and two family relatives stopped by to visit me. I got told they were complaining the following day.

The only thing I had available for them was Oreo cookies, Lays chips and Pepsi soda. They went on about my lack of hospitality and how I'm not like mom. They also don't understand how I couldn't serve them a good meal if I know how to cook. I told them I only cook for myself.

Honestly are you supppose to cook lunch or dinner and serve meals to guests?
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I don't cook every single day anyway. Sometimes I like going outside.
Are you suppose to give meals to guests?
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