In my experience, most nurses come in, socialise and cheer you up, take your blood pressure and temperature with automated devices, that one can buy for home use, and give you medicines that a doctor has prescribed (someone can also can do at home if they are feeling up to it). This is a wonderful profession and they should be highly paid but do they really need a bachelor's degree or master's degree to do this job? Some specialised nurses can even draw blood but, again in my experience, many of those were unable to "find a vein" and had to call on someone more experienced or a doctor. Pretty sure some experienced heroin users could do a better job at this. Just my experience.
Your US medical insurance will cover an illness or disease (why 12 step for profit rehabs continue to lobby this idea). Less likely to cover you for a lifestyle choice that became a learned behavior.
Need to point out that the disease theory of addiction is hotly debated in the US. Not so much in developed countries where socialized medicine is available, where the theory is widely discounted. Those interested should take a look at the work of Stanton Peele.
Sure I read a statistic that roughly half of "happy", long term marriages are, in fact, unhappy and unfulfilled. If true then about 20-25% of first time marriages do not have happy endings.