Generally I don't add salt to my food, either cooking or at eating time. If I have guests then I add some at cooking time. I do this because most people are used to salt. Almost all processed foods contain salt, and some contain a lot. Restaurants generally use salt to enhance food with more concern for profit than health. I remember a headline above Chinese restaurants being ticked off for serving their meals with more than the RDA for salt, and that's just one meal.
I write this post because I think many people only think salt is in a food if they sprinkle it from a salt pot. They don't count how much salt is in cheese or deserts and cakes etc.