Once you get that 4 year degree you can go into any specialty and enjoy the hour for that job. Hospital nurses work long 12-13 hour days, but it only 3 days a week. If you're an ER nurse it's very hard to work long 12-13 hours. Emergency rooms are CRAZY busy by far. But how many people have jobs where they automictically get 4 days off per week without requesting PTO? Not many except hospital nurses do.
Want shorter hours? Once you have your 4 yr nursing degree you can find a job almost anywhere. Many businesses hire nurses, airports, insurance companies, schools, cruise ships, military, etc....those are typically 8 hours a days.
In my opinion, working 8s and 12s were not bad. If you think of it like this it's easier - when you've already worked 8 hours, what's another 4 hours? You already know all about your patients and have already charted majority of required documentation.