True, some interest-groups are fighting for principles. The Will of the Majority is Law. The presumption of a democratic system is that the Majority is Right. This presumption is not, nor ever has been, convincing. The law is not right simply because a majority of the citizenry supports it.
Majorities can be financially irresponsible, and oppressive of minorities, or just plain greedy.
We all have our personal wish-lists of very worthy and highly justifiable needs, and if we can get others to pay for them, all the better. Government, theoretically the source of law, has now become almost totally preoccupied with the collection and redistribution of the nation's wealth. Certainly we can ask the question. And in many cases we can answer it, sometimes in the positive, often in the negative. But the most important aspect of this vital question is that we can ask it.