Traditionally, at home back in India, salad was about sliced cucumbers, onions, tomatoes, cabbage and carrots drizzled with lemon juice. I never liked the lemon juice, actually. And I never liked eating the onions or tomatoes raw. I would eat the cabbage by itself. And sometimes the cucumbers and the carrots.
In recent times, I've discovered how versatile and fun salads can be. I always liked the cabbage, but it often had a rather sharp flavour. Lettuce, on the other hand, has a much better flavour and comparable, if not better, health benefits.
A lot of people here make a salad into a lunch, by throwing in some grilled chicken or tuna or bacon. I've discovered that it's a great lunch. It's easy to make (just throw everything together in a bowl), it's light so it doesn't make you feel drowsy right after you eat it, but it's still quite filling. So you're not hungry or drowsy in the afternoon or evening. Something like grilled chicken would need to be heated up, but tuna can be eaten straight out of the refrigerator. You can make your own variations by adding cooked chickpeas, sweet corn, olives, jalapenos, tortilla chips or what have you, and mixing and matching the dressing. I keep bottles of low fat salad dressing in my refrigerator at all times. I think it's one of the greatest things you can buy in a bottle, after bottled water.