Don't get me wrong, I know there are worse jobs out there. If you can find a nice locally owned on, then it is ok. If you get stuck at a Walgreens or CVS, forget about it. The money is decent, although salaries seemed to have topped out about 10 years ago and aren't really going up.
Dealing with people and insurances are by far the worst things. EVERYTHING is your fault. The doctor hasn't called the rx yet? Your fault. My copay is too high. Your fault. A drug isn't covered by the insurance. Your fault. A person calls in their cholesterol medicine at 7pm on a friday night that they haven't filled in 8 months and now its out of refills. Your fault.
Insurance reimbursements and discount cards (fuck off GoodRX) kill any money you can make anymore. That in turn leads to no raises or bonuses. The stupid shit that insurances ding you for are ridiculous. If your Medicare people don't refill their prescriptions no time...cut in reimbursement. If doctors don't write for certain drugs for people with diabetes....cut in reimbursement. And on and on.
I guess what's most frustrating is there is so much out of your control that you can't do anything about, but you are still responsible for.
Again, it beats working construction in 100 degree heat and manual labor, but the mental side of it sucks.