+1 to what Laura33 said. You need to put boundaries between work and home. 90k for 60+ hours of work is not a very good hourly rate. I used to work a lot when single (I'm a computer engineer so I always have some coding or tinkering to do - it was also my hobby so I was happy with it) but once spouse and kids came into picture, I moved to a more reasonable work time. And I find that my efficiency is way better now than when I was working 50+ hours. Either get a huge raise to justify your working so long and hard or work on having systems in place when you are out. For example, what happens if you are out on vacation or out sick for a few weeks? Does your company stop operating or do they find others to get their queries resolved?
Also if your boss answers because you haven't or because you are not available post 7 pm, that's his/her call. He can do it and screw his work life balance. It doesn't mean you need to as well. Think about it.
When I am out of the office, I change my Outlook email to state to contact me by phone if something is urgent and state that otherwise I will respond upon my return. We don't have a great backup system but my boss is in copy on a lot of things so she would probably either step in or ask someone else to help if she saw something come through while I was gone that I didn't get to. Honestly I've always had my laptop on every vacation I've taken since starting here as it's the norm here. So nothing has gone unresolved just because I'm out. I try not to work but I do still have to check emails as I simply would get buried if I didn't.
Ok, so do this even when you're not out of the office (no one will know!)
I recommend creating a block schedule for yourself. You say there's work all day, but pick a "slowish" time and block it off as "busy in a meeting" on your calendar, and set your email to that phone message.
Examples:
6 am: workout at home
7 am: make breakfast
8 am: work
9 am: 30 minutes responding to emails
9:30: work
12:30: set up your email to say you're out of the office
--get a load of laundry going
--put away yesterday's clean laundry
--wash dishes
--make a decent lunch
2:00: spend 30 minutes answering emails
2:30: work
5:00: set up email to say you're out
--random chores
--shower?
--make an awesome dinner
--do something fun for you
7:30: spend 30 minutes answering emails
8:00: set up email to say you're out
--go for a walk
9:00: go to bed early makes a man healthy wealthy and wise :D
OK, so that's just a random example. You can tweak it. But basically set up your ideal schedule and stick to it!
I turned off message notifications on my phone. I was really scared to do it, because what if someone couldn't contact me? My team picked it up pretty quickly and called with urgent stuff. I get more done because I'm concentrating and not being distracted by messages all the time.
Set yourself some boundaries. Make your ideal schedule. You are the only one who can make others respect your time. Figure out how to make yourself a rested, stress-free happy person and your employer will benefit.