My parents have made this comment several times - about regretting not taking us to church. My father apparently was raised United and my mother was raised Presbyterian. There was no religious discussion at all in my home. The only thing my parents stressed was trying to be a compassionate and "good" person and that they didn't feel a connection to the Divine (my words) was found in church.
When they have now, in later years, commented that they regretted not sending us to church - the comment was not made with a religious intent. Both my parents are looking back at their kids' struggles and pains and I think they wonder if giving us a more structured tool of coping and a community would have helped lessen our struggles.
I've just shook my head and said not to bother having regrets. And for what it is worth, I've done quite well finding my own spiritual path. My brother on the other hand has no connection with any thing spiritual nor does he even desire it.
And I've know many people raised in church who went to services weekly and still, in adult life, either have no connection with any Divine spirit or are simply struggling to lead a good life.
My take on it is simply a parent looking back and wondering, had I done this .... would they have benefited?
Sorry about my spelling - baby crying!