Why do women ask for space instead of talking before breaking up?

Been through this one before, nothing feels bad or wrong about the relationship itself, but outside problems like family or other problems start affecting her thought process and then she feels like taking a break.. still wants to be your partner but.. week or two later (of much less communication) she feels like breaking up.

To us guys what taking a break means is not what it means to women.. what taking a break means is you're one step away from wanting to break up for good and were trying to understand what we did wrong and how we can fix it. Some people suggest oh she'll come back around when she's ready. So sometimes some guys wait, and when she comes back she's yknow ready to continue.. but in other times she just doesn't come back.
So what im asking is, why not take time to really assess the situation and discuss why you're wanting to take a break from your partner that isn't doing you any wrong, your partner is willing to talk things through with you, so why not take time to discuss things?
Why do women ask for space instead of talking before breaking up?
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