In Netherlands (and most of the western countries as well) it is common to have a baby first..
First, start a family (baby)
Secondly, marriage~
Most of my family members (cousin, niece) are around 23 years old..
they already have a kid~
Then, usually a few years later they get married~
This is nowadays situation~
But in the past, this used to be different..
For example, my parents got married when they were (28 years old)
My mother was pregnant with (me) when she was (34 years old)
So, nowadays.. it is common to have a marriage and have a baby around the age of 25~
Because the most important thing is to finish the studies and find a good job~
Usually finishing studies is completed at the age of 21/22 in Netherlands