Not asking you to know but just ask rabbin and rabbis who actually pay attention to the feelings and emotional needs of their talmidim ...
Do I think it's abnormal for too many children to be something someone can't handle? - No.
Do I think there are frumme yidden taking BC who can handle more children? - Yes.
Do I think there are frumme yidden who are not taking BC, who should have a discussion with a Rav about it, who never had the discussion with a Rav? - Yes.