I'd say yes to the first but no to the second, and it gives me no joy to say so.
The vows which people make on their wedding day don't seem to matter very much to them nowadays; I'm weary of getting all dressed up and spending lots of money to go to weddings and watch couples make promises which in all likelihood they're not going to keep. All those protestations of undying love, and care, and fidelity don't last very long for a lot of people nowadays, that's if the women can ever manage to get the men to commit to them in any real way, never mind marriage, before their biological clocks have timed out.
That's not a good thing imo, certainly not for children. Yes, it's not good for children to live in a home where the parents are at war with one another constantly, but unless the fighting is really terrible, it's worse, imo, being the product of a broken home. All the studies, if done honestly, show the same thing. Children need to be raised by a mother and a father in a stable environment. The goal is to make the union, the commitment, whether or not it's a legal marriage, work if at all possible, although I think the legality and the ritual are also important in meeting that goal.
I also don't think it's a good thing for men and women. I saw what company my parents were for one another after my brother and I left, and more importantly, I saw the constant care and support my father gave my mother during her long illness. She died holding his hand as well as mine. That's what I want for myself and what I want for my children.
I'm probably not the best person to ask, however, because I was raised very conservatively and have lived my life very conservatively. I fell in love almost at first sight very young, as did my mother, and it's been a lifelong affliction.
Not that we haven't had our issues, because we have, as two hot tempered individuals were bound to have, but it would take something catastrophic to induce me to leave him, and he has never shown the slightest inclination to let me go. Far from it. Of course, in the early years I was probably also influenced by my father's words to me shortly before our marriage. He told me in no uncertain terms that I had to make my marriage work, that it was now my over-riding commitment, and that minus my husband beating me or our children, becoming an alcoholic or drug addict or gambler, or moving a mistress into the house, I'd made my bed and I would have to lie in it. Whether he actually meant it I now doubt, but I believed it at the time.
It seems to run in my family, this idealistic view of love. My great-aunt had her issues with my great-uncle, mostly stemming from the fact that contrary to his promise he brought her to live in his family home with mother-in-law and father-in-law, sisters-in-laws, debts, the Nazi occupation, you name it. Yet she often used to speak to me of how she loved him and what a hole his dying had left in her life. She'd say, "After a long day of work, I'd wash my face and comb my hair and put on a fresh apron,and stay near the door or window looking for him to come in from the fields. When I saw him coming over the hill my heart would lift, and everything would be right with the world." If you choose well and think that it's not just being in love but working at loving that counts, that's what you can have.