Are they party girls, careless, "man trappers" or just unlucky?

A family I know quite well consists of four daughters (no sons).
I eventually found all four were pregnant at least once before they were married.
This and several other observed actions & attitudes have led me to form a rather strong opinion of them.
Although my opinion is not likely to change, would still like to hear what others think.
Are they party girls, careless, "man trappers" or just unlucky?
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