Nothing to feel "bad" about...not sure on your feelings, actually, BUT. I was a street preaching christian with my family, and then i married one! Well ,let's just say, i feel bad about that! it was hell on earth!
The way i look at it, we got lead into something very ugly due to brain-washing and psychological/even physical abuse. ( my dad actually had his nose broken by a catholic school teacher- who was a nun- who hit him with a ruler, and i had a lutheran neighbor, who was a Mr. McFeely to the youth, and i know this personally....) AM I am ashamed of it myself? Knowing i preached lies (even though i was indoctrinated in it from youth, i have schizophrenia like symptoms with my BPD, and I was hearing voices, and i decided not to have children because the of hell and now it's because of this world....). All i can do is just un-preach it, it gets rid of the shame and blame- for me atleast...not telling anyone how to be....
My dad was a catechism catholic school teacher all throughout my early childhood, and both my parents cradle catholics. Both my parents have mental illness,. My dad attempted suicide, my parents divorced, he abruptly left the catholic faith, soon after that he dated two women, picked up drinking again and porn, dropped that, then married a fundi-protestant, and went to become a fundamental protestant who hosts multiple bible studies and street venues, and he used to claim most catholics go to hell, he's glad he got out of that (?).....religion is very confusing to me now!..... Their grandson ( my step-nephew), who is my age approx, commit suicide in their home by a heroine over dose, and had no funeral....They still deny it was a suicide, but my siblings and i feel otherwise.