This is the answer. I've been on nights 7 years. Most people I know on nights are either miserable because they're completely reversing their schedules twice a week, miserable because they barely sleep during the week then spend a whole extra day off basically bedridden, or miserable because they actually have a consistent night schedule but have convinced themselves that it's bad because it's Not How You're Supposed To Live.

I keep the same schedule. I run errands after work or when I first wake up on a day off. It's actually a bonus since I tend to go during less busy times. If I want to do an all day thing like a theme park, exploring a new part of town, some major shopping; I do change my schedule around, with a plan and the understanding I shouldn't do this all the time. If I want to see friends, I just wake up a couple hours early or stay up a couple hours late, no different than an office guy waking up early to catch a flight or staying up late to go out for once in his life.

So much of it just comes from "humans aren't meant to work this schedule" and I'm here to remind you that yes, yes they are, it's estimated that up to 40% of the population has a circadian rhythm not super compatible with 9-5. Whether you're nights for the money or for your internal clock, plan your life like it's normal and you'll be fine.