What does wife material mean?



With this i mean that i've heard a lot of guys saying like ''wife material'' and ''worth to wife up'' and so on.
If you guys find a girl that you really really like and is ''wife material'', Do would you wanna stay with her till you get her AND get to marry her, just stay with her till she's yours for a bit, or is it just a compliment like she is a ''good person''?

Or what do you mean by it?
What does wife material mean?
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