Oh, in my life it's abundantly clear. Needs are shelter, food, water, hygiene, clothing, work, and sleep. Everything else is a luxury and I feel a little guilty naughty every time I splurge and seek something outside of my 7 essential needs.

I even feel naughty on the rare occasions I drink flavored sparkling water instead of basic water. Because basic water is a survival need, whereas flavored sparkling water is a tasty tingly indulgence with aspartame that leaves me feeling even thirstier for real water.