Also, I eat a lot of rice and lentils and veggies, and it is very easy to make. In 30 minutes of work (excluding boil time) I can make enough to feed myself one meal of this a day for a week.
I think people have a mental block around this. I don’t blame em, I encounter it myself, start eating out a bunch, start feeling crummy, then realize I gotta eat something healthy. Then I cook some good veggies filled food and life is good again.
Another aspect is wide ignorance of natural flavorful things. Fresh garlic, fresh ginger. Spices: cardamom, cumin, coriander, pepper powders, etc.
People can do this, it just takes investing a little effort to get started and maintain it.