Each to their own as loliday says.
I would be happy for my DH to go away for a concert overnight or away for a few days with the lads too. To me that translates as quality time with my baby while I plan my night off/trip away when he is back!
Although truthfully I don't know if I'd leave my LO for several days because I'm addicted to my bump as it is, I'll be obsessed when DD actually arrives! 
It's difficult to say until in that situation - my mum never left us with anyone. Ever. She had serious trust issues. It meant that she lost all her friends and her former life, so me, being the youngest, became her only real friend. Which meant she kept me close and I was never allowed out to parties or clubs, even at 17/18 years old.
I don't want to do that to my child, so perhaps it's a bit better to start as you mean to go on, and allow a bit of freedom.
As YD said, as long as you have a competent babysitter, what's the harm?!
Sorry for overshare of slightly traumatic childhood lol 