My husband was and is a very moral person, even when he was not frum. His parents, likewise were very morally upright people in every way. They simply did not follow the Torah Bein Odom LaMakom. Bein Odom l’chaveiro, I do not believe I have ever met more righteous people (except for my own parents, O”H). Because of that, I had no reservations about marrying him, and certainly no regrets.
ACIT – you raise some very pertinent issues. I wish you much hatzlacha and speed in finding your zivug. You sound like a very special young woman, from whom other B”T could learn a lesson or two. But please understand that you are unique. Many kids who come from an irreligious background or who were off the derech for some period of time, have done things that could have lasting repercussions on their health, reproductive ability, and so forth, and these are things that very much concern loving parents when looking for a shidduch for their children. You will G-d willing, be a mother some day, and you will see how you feel then.