Sounds very strange to me.

If you've got the time and inclenation to prepare and cook you own food, and are organised enough to do several meals worth for the freezer as you do that evenings dinner, it seems odd that you'll swop the effort of shopping for ingredients for that of going over to a strange kitchen.

It may have more appeal for less confident cooks, who maybe don't cook that much, and tend to do so from recipes when they do. Also. those whose are cash rich, and time poor.

I am very confident in the kitchen, and make up most things as I go along, and work from basic ingredients. If somethings doesn't turn out as expected, then I've learnt something, and it's almost always edible. But most people don't make bread without measuring, curry pastes from scratch, or brew their own beer...