Confidence is contagious. So is lack of confidence.
If a woman doesn't imagine the lack of sexual interest as a problem, then it is what she believes it to be, but in a man's world, you may call it impotency, lack of power and strength. Remember in both worlds, there is a low risk of infertility and in the other a higher risk of calamitous fruitless bestowment. Yes lack of sexual interest is a dysfunction many of living creatures endure.