Opinion!??

I am the worker of the family and husband sits with the kids. He goes over to his mom with kids everyday to not just stay in house 24/7. He freely leaves kids with his mom whenever he needs/wants. I work 10 hours a day. When I come home I would like to have family time. But he insists it's normal for him to get out of the house EVERYDAY for "me time". He is gone for a few hours comes back stoned, eats and passes out. No time spent until the weekend. And even then he will leave for a few hours a day. I just wanna know am I wrong for being upset? How would you feel in yhis situatuin? Anytime I bring it to his attention, he says it's completely normal and he doesn't have to be with me 24/7.