<human>: Condense the text into a few key points

We are young to be married, I know, but in our culture we are actually quite old to be just married (3 months). Most of my [21F] female friends are married with children already, but as I said I am ambitious and we (me + husband [22M]) are waiting until our thirties to have a child.

I've just worked out that my husband is not ambitious. I guess I kind of saw the signs when we were dating, but the concept of being fine with doing the same job every day was so hard for me to get, that I did not see it until now. Husband and I went to university for the same field, and he got a job offer yesterday that seemed to be perfect (from my perspective). He declined the job. He's been working odd jobs to help support us as I finish my final year of schooling, so I thought a job in his field of study would be a no-brainer. We had an argument that night; I could not understand why he didn't want this job in his field, while he did not want the job because the job position was not something he would want to do for 20 years.

I am the type of person who will get a job expecting to move on from it in a few years. He is the type of person who wants to find a place where he will not have to move for 20 years. The job offer in question wasn't in the nature of an entry-level job, it was just with an organization that he did not want to stay with for 20 years. I told him that getting the job would just be a step towards the organization he really wanted to be with, but he said that he wants to find the place where he will be happy working there for 20 years.

My husband is very supportive of my career goals. I just don't understand how he cannot be ambitious. Can anyone else give me insight on why someone may not be ambitious, and how I can understand my husband better?
<bot>: I am ambitious, but my husband (I just realized) is not. Being unambitious is a foreign concept to me; can anybody give me advice as to why someone would not be ambitious?