If you're working those hours, more fool you. Unless of course this is a 2-month roll-out, and you're having a month's break afterwards.
I'm not married, hah, nor do I or will I have kids.
But my life is not about "putting the infrastructure first". Yeah, the weeks I'm on call, I'm on call. If there's a project getting close to deadline, I'll put some extra hours in. But if your systems are so unstable, or you have so little backup, or it's one crisis-deliver-NOW project after another, that you are getting called every night or you're not leaving until late o'clock, you don't have too far to look around to see where the problem is.
I'm female, I'm a sysadmin, I couldn't give one toss about family obligations (they are not gender-dependent and I wish more people realised that), and yet I still want a life outside the server room.
You don't get any greater rewards or sufficient recognition for working ridiculous hours constantly, other than a bit more cash in your pay-packet, Perhaps. If you never get the time to spend and enjoy it, what's the point?