I want someone to invent a pill that makes food unnecessary.
People love the texture, look, smell and taste of food. Military/Starlfeet rations and cubes serve a purpose for long term close-quarters environments like deep space assginments, but we've seen humans indulging in full meals whenever possible.
Kirk liked his sandwiches and was quite upset when they were eaten by the Tribbles, seemingly the final straw in getting them off his ship.
Restaurants are still popular on Earth and are constantly referenced or shown when either there, or talking about it.
Obviously actual 'food' is still very important to Earth and its populace.