Lettuce is garbage food. Mostly water and very little nutrition. What little it has can be gained from other food sources which are far more dense in nutritional value.
Lettuce is just a filler for the the salad bowl before you get the steak and baked potato!.............
I like lettuce; and depending on the type, it can be very healthful;
https://health.clevelandclinic.org/benefits-of-lettuce
I eat spinach if I want salad.
I grow my own. Not the bland crap from the store. It is delicious and nutritious. There are many varieties never sold that can be home grown, selected for one’s region and taste, as well as nutritional content.