It's your life; do what you like. Different people have different opinions on the matter. The one piece of real advice I'd give you is to stay home enough to pay attention to and know your children. Do schedule time to be with them, even if it's to do absolutely nothing. Because if you don't you'll regret it.
My opinion is that it should be far less frequent and if possible, only at certain special occasions. Social meetings are usually pastimes for the unmarried though a married one can afford one in a blue moon. Children need mentor-ship while the spouse needs his presence for companionship for as long as possible. I believe such problems should calmly discussed by the two parents for the benefit of the whole family. There is need to find out why the man prefers being out with friends than at home with family.
Well it's ok sometimes that way you don't feel lost in the whole thing but I wouldn't let my husband go out to much to much freedom might make him want to jump ship and think life is better off if your single