If hispanic girls are family-oriented, why are some no longer having kids in their early 20's?

I've been dating two nice hispanic girls. Both were ages 20 and 22. They both came from a good upbringing.

Even thought both wanted kids eventually, they expressed it's too early now. Neither of them are ready and instead wanted to finish their major first and do other things, not raise babies. One of them made up her mind that she only wants 1 or 2 kids at most, not too much.

It seems that some more hispanic girls are delaying motherhood. They don't want kids in their early 20's. Why?
Updates
+1 y
In the past more hispanic girls used to have kids early on and it became a nice, big family; 3-4 kids. Recently some of them have been taking longer on having kids and limiting it to 2 kids.
If hispanic girls are family-oriented, why are some no longer having kids in their early 20's?
Post Opinion