10,000 hours of abuse
Perhaps the environment you grew up in was emotionally abusive; you may have been emotionally neglected – and otherwise ill treated. Or you may just have been programmed to be a total people-pleaser. Either way, you were trained to be exceptionally receptive to an abusive partner. So you, like me, were much more inclined than another woman might be to put in those 10,000 hours (and possibly many further thousands as well).