There were some changes I had to make to what I do when I got married. In fact, those started happening when I was dating my wife. But, my wife has never denied me the things I was doing before I met her. And for that I am grateful.
When kids came along, we'd been three years in this state and I still hadn't met anyone or found a group to game with. So, having didn't didn't really change much in relation to my free time or weekends. My kids take after us, two parents who were never interested in sports and engaged in solitary activities. So, there was never driving anyone around to football practice or whatnot. I would have done that if they'd been interested - but they weren't.
We did however, drive them around for various other activities that they were involved in at school or other places. So there's that.
But, in a thread I started a long time ago that
@Scepticalscribe was a part of, I realized that it comes down to priority. My family is a priority, the things I need to get done are a priority, work, etc. But what I do in my free time and on weekends is also a priority - to me. So, I will get my other priorities done, rearrange priorities, or go without some sleep in order to meet MY priorities. Sometimes this means, I get shorted. And that's fine because my priorities are lower down on the list. But most of the time I manage.
I was waiting in the breakroom once for my wife to finish up whatever she was doing (we both worked at UPS, that's where I met her) and I overheard a conversation between two of the maintenance people. One of them got married, and described to the other person that once that happened he cut off all his friends and abandoned every hobby and personal interest he had to be solely for whatever his wife needed/wanted out of him.
That scared the hell out of me. I am fortunate my wife was never that type of person. Later on, I worked with someone who deliberately took as much overtime at work as he could possibly get. The longer he stayed at work meant less time that he had to spend at home dealing with his wife (and kids) - whom he didn't seem to care for. Again, I am fortunate.