I am scared of when I become an old man I wouldn't be attracted to women my age why is nature unfair to women?

I go see a therapist and I have hypochondria. My therapist told me that you might have been attracted to a girl in pre school and kindergarten while you are in the same cl and asked me if I remember and I told him no I have no memory my first crush was 7th grade. Soo his point is I will get attracted to women that age when I am that age and wil change the wy he thinks.Is he right? I am 22 and when I see old women post menopause they are ugly but I see happily married couples.The men get ugly to but the women much more.