In rhyming text a whole assortment of baby animals ask their mamas whether they’ll still love them and do all the same things when new babies come, and each mama replies, “of course,” calming fears and giving assurances.  It definitely has a very specific target audience and purpose (kids with pregnant moms who need reassuring), and it does a sweet job of fulfilling that purpose if you don’t already have something to fill that niche, but it doesn’t have wide reading appeal.