Coffee or tea can indeed be had, every day for a year, for a lot less than two weeks' worth of a minimum-wage-earner's take-home pay. Just not at a coffee shop, made up on demand by somebody else, with fancy ingredients and lots of variety. Such a product is far from simple and the cost of providing it, as SwordGuy pointed out, is not trivial.
Small luxuries can indeed make an unpleasant, difficult lifestyle more pleasant. But when these luxuries become a daily item of consumption, they cease to be luxuries. Hedonic adaptation sets in, and pretty soon people feel as though they "have" to have their expensive daily cuppa. Any suggestion that they replace it with something more affordable is met with scorn.
For what it's worth, because of my adopted daughter's family and social connections I'm in far more regular contact with the entitlement class than I would ordinarily care to be. By "entitlement class", I don't mean poor people, low-income people, or people who receive social assistance. I mean people who, as adults,
(1) genuinely believe they have a right to the result of other people's labor without giving something of equal value in exchange,
(2) are so convinced of their entitlement that if other people aren't forthcoming with their resources they feel justified in taking what they want by force, guile, or social pressure, and
(3) have reason to believe as they do because their expectations have a basis in fact.
Most of the members of this class whom I've met so far spend far more than I do on fast food, restaurants, expensive drinks, disposable clothing, makeup, hair/nail/beauty treatments, and entertainments. They do this instead of saving money, educating themselves or building themselves up to qualify for a better job or a higher income, or acquiring appreciating assets. But they don't feel as though they're treating themselves. They feel as though they're paying for something they "need", because they feel bad about themselves if they don't.
Apparently going without a luxury now and then "triggers" people in the entitlement class and gives them trauma. So does delayed gratification. They simply aren't emotionally capable of delaying gratification or of being satisfied with less. Nor are they capable of making a plan (such as a budget) and sticking to it. The maturity and psychosocial development just isn't there.