I am still in school, but say five years in the future I will be teaching, and my husband will be working in the geology field. Even with my masters and being on a higher pay grade for teaching, I would never make as much as my husband would in the geology field. If he goes on salary at his current job, even though it's entry level, he'd be making more than me as a teacher. Jobs in his field pay very well because there is more demand than supply.
My income as a teacher would likely be enough to support us if my husband wanted to stay at home. If he wanted to switch roles, I'd be okay with it. But I just don't image he would. Before he got this job, he left very depressed that he wasn't fulfilling his "role" as husband and frustrated that he wasn't using the knowledge he learned in school. Now that he is working, he fills very satisfied.