The point is a restaurant party would have to taste a lot better than home cooked food to be equivalent in value.

And I am a good cook, when the example above was given I was thinking it would have to be dinner somewhere like Chez Panisse for a party of 10. And even then it wouldn't be the same as a party at home--maybe SV tech people don't value this, but most cultures still value the social connection of cooking for ourselves.

It's not about being a good cook, it's about the joy of cooking and sharing a meal with friends. And the joy of having friends stay overnight and having a coffee together in the morning.