disagree- home cooked meals can be all four. it certainly takes practice, cooking infrastructure and foresight, but I think cooking at home can significantly beat all other options as the main source of food.
Of course this advice might not apply in a 400 sq. ft. NYC studio without two burners and room for two pans, but for most people that's not the issue.
I know how to pan sear a fish and stir fry vegetables, but what I didn't know was how to do grocery shopping for 1 without ending up with wasted/spoiled food. For me, it's not the cooking that's hard, it's the grocery shopping/meal planning.
These are exactly the shortcuts and "cooking infrastructures" we're designing for busy people and families at Meal Garden (http://www.mealgarden.com). If healthy rated meals can easily be procured or prepared we wouldn't need bandaid solutions like Soylent.