It is if you have bought in to the current narrative that the nuclear family is outdated. There are important reasons for this structure. There is teamwork for the good of the household. One works, one can stay home. I don't even care which does what. Maybe one full time and one part time job in order to juggle childcare responsibilities. It also develops more balanced kids who are raised with a father and a mother seeing them work together for a common cause. It's all about priorities. When you have kids you are no longer the most important person in your life. You may work a job you don't especially like in order to feed your kids. Parents (not sperm donors) care more about the wellbeing of their kids than of their own. If this is a foreign concept to you then you have either bought in to the nanny state mentality, your parents have utterly failed as parents, or both.
I always marvelled at the way my parents acted as I grew up with my four, and then three, brothers. Everything they did, virtually every penny they made and spent, was earned and used to provide things for me and my brothers. I remember clearly that my mother stayed home, looked after the kids and the house, did all the finances, and when we got a little older she worked part time in a bank and then a pharmacy - my mom was one very smart, savvy cookie. My dad, on the other hand, was pretty simple - went to work every day and came home and played with the kids and did odd jobs around the house. He got an allowance of $5 every week to buy a coffee at work and a pack of cigarettes for the week. Any entertainment was based around the kids - enrolment in sports for the kids, going to the movies with the kids, etc. My parents never went out just by themselves and left us with a sitter or me with my older brothers. And they never took vacations themselves, always just the yearly family vacation at the cottage or a car trip of some sort, nothing elaborate.
They had fun and "partied" when they were single and dating, but were generally of that class of people that grew up responsible for themselves because back then no one looked out for you if you didn't look out for yourself. And nobody who wasn't married had kids, unless a husband or wife died prematurely, and then church groups and friends helped out those left behind. And once married and when kids started popping out, well, your life changed because now you had even more responsibilities and your child/children was number one on that list and God help the poor sod who didn't take raising a child seriously - they'd be ostracized.
I had great teachers in the lessons of responsible living and life. My generation, I'm sad to say, has failed our children in many respects because we had it so good and we could provide so much more to our children and we've spoiled them.
Today, it's the hedonistic me-now generation that believes they're entitled to have it all - fresh out of school, they deserve the six figure salary - get married, don't let it cramp your free lifestyle - have kids, let the government provide because I'm damn sure not gonna give up next year's Lexus for the snotty nosed brat.
I don't know if we ever get out of it, but the best way to start is to pull our kids off the teat and throw them out to the wilds on their own to fend for themselves and start learning how to live responsible lives.