speaking only for myself, i feel that i have been a submissive all my life and didn't necessarily 'become' one. although i did suffer physical, mental and emotional abuse by my mother, my father was very loving and caring and never harmed me in any way. we were very close until he died when i was 14. i suppose my mother's abusing me is why i could never be interested in being submissive to a woman, although i could see myself assuming an active role if i become sexually involved with a woman, although i wouldn't be interested in subjecting her to any pain, i would use her then kick her out of bed as soon as i was satisfied, which would make me a terrible Domme.
i have been fortunate to never suffer from depression, and even though i came from a harsh background, i have always been happy. perhaps my father exiting my life early made me look for him in other men, and to a young girl, Daddy is strength and power, so maybe that is what made me a submissive, or maybe it is just my personality. sorry if this is TMI - although i don't analyze it anymore, i am just offering my own experience as to what makes someone a sub, and i do know every girl is different and at different stages of her journey. thank you for this post.