Indeed! I was in SF for a few months. Finding affordable food was insanely hard. Fast food was both really cheap and everywhere. Fresh produce and basics like bread were expensive or hard to find, a long bus / tube drive away. Of course it's much easier to fall into that trap of shitty and cheap food.

Where I live the balance is much easier. Vegetables, fruit, meat, ... it's all relatively cheap and easy to get, there's supermarkets and bakeries everywhere. Fast food is relatively expensive, so you get something to think about: (expensive+unhealthy but easy) || (cheap+healthy but you need to cook)