I don't have kids, but let's really be real here: Since when did the fact of "not being happy" stop anyone from doing anything work related? Do you think people in Africa are "happy" spearing down lions and risking their lives? Do you think people in the ice age loved leaving their fires and families behind to risk their life for some food? Do you think Asians are happy about leaving their families behind to come over here and make a living working in menial conditions?
The ideas of "working" and "labor" has been so romanticized in western culture it's not even funny.
You have to complete assignments in air condition from 9-5. How horrible

Do you seriously know how many immigrants would KILL to be in that position?

It's not as bad as people make it out to be (ie. First world problems)
Again, I'm not speaking about any "American Dream". I'm talking about achieving your goals and setting yourself up to be in a position to help your family (and family extends way further than just your kids/kids you don't have). What you listed is not even the "American dream", that's the way life works period, no matter what country you live in.
I think you misunderstood my traveling talking point. To work past that quickly, would you trade the feeling of bringing your first born in the world for the experience of traveling? You wouldn't. My only point in that aspect is that bringing up experiences is "futile" because everyone has felt a better feeling or was the ability to experience something that they would treasure, if not equally, then more.
And you may not be able to travel while you're kids are young, but if you do things right, there's no reason who shouldn't be able to travel the world once they are of age.
I'm not even talking about "marriage" in the traditional sense. It doesn't take a ceremony to make someone your "wife" or "husband". Someone who shuns away commitment ain't hittin' right. Can't tell me you want to be an old man by yourself and have me believe it.