Interesting question. I can’t say it has been my experience that parents would frown on their children entering the Religious Life, but then, sadly, there doesn’t seem to be many children out there choosing to enter the Religious Life. But – as when my daughter decided to enter the Marines – I would guess a lack of **initial **enthusiasm may include . . .
Not being prepared for the child to make this decision, being “blindsided” by the announcement.
- Not knowing a great deal about what would be expected of them. A need for education.
- Fear that the decision would draw the child away from the family.
- Concern that the child was making a life-changing decision hastily, without proper discernment.
- Concern that the child was making the decision to run away from some other situation.
- Concern that the child was not suited for the vocation (it is sometimes hard to see one’s own child in a position which one views as one of spiritual leadership . . . we aren’t especially encouraging when a young person declares they want to be President, either).
- Not wanting to seem too enthusiastic in case it does not come to be.
Those are just off the top of my head. Grandchildren wouldn’t even enter into my thoughts, but I guess it may to some who put more stock in genetic immortality.
As far as not encouraging religious vocations, I do think it is simply not on many parents’ radar. There is an assumption you have to encourage a child to be a doctor or a teacher or a chef, but GOD will take care of encouraging (“calling”) him or her to a religious life.
(All of my girls are married. But one young man I taught in second grade religious education is now a priest – and I’m as proud of him, and his parents, as I can be!!!

)