I find transportation more immersion-breaking than lack of children.
This game goes out of its way to show how HUGE Southern Thedas is, and how it spans a whole continent.
Yet, this is a medieval setting where flying griffons are extinct, teleporting eluvians are mostly unknown, modern transportation like automobiles, locomotives, and air planes haven't been invented, and the only form of transportation we know of are Inquisition horses, which started out as tired old nags before or if you never got to Dennet. Still, they're just horses (and harts and the occasional giant lizards and rhinos and... nug monsters
), and horses don't move that fast. At their fastest they can go 45mph, but that's only at a gallop, and like humans they can't run at full speed for too long. You'll often have to let them walk, trot, canter, and/or rest between spurts of galloping to save their strength, or switch horses at every inn you stop at so you can keep the horse going fast without killing it, and that's not even getting into horses that go lame, throw a shoe, break their leg, get sick, etc.
Yet, characters travel across the continent as quickly and casually as we do with modern transportation; often across deserts or mountain ranges, in what I can only assume to be a matter of days. No one ever talks about the long boring journey, having saddle-sores from riding for days on end, being tired from weeks of traveling across, say, the Frostbacks and then Orlais to get to that stupid Western Approach, etc.
I especially find it immersion-breaking how characters casually pop into a cafe or a shop in another country to have one meal or meeting or purchase, when I imagine it took weeks of riding a horse or sitting in a wagon to get there, then they'll have to spend another few weeks traveling on horseback or wagon ride to get back.
For example, at the end of Cole's personal quest at Skyhold, apparently the Inquisitor and Cole saw fit to travel by horse across a massive snow-covered mountain range, reach the northern coast, hop on a ship to sail across the Waking Sea, then travel further inland by horse to get to Val Royeaux, just so the Inquisitor could treat Cole to some wine at a little restaurant. NOPE! Sorry Cole, you're getting the swill at the Skyhold tavern. I love you kid, but it's not worth what I can only assume is two weeks of horse and ship travel just to treat you to one bottle of wine at an Orlesian restaurant, then brave another two weeks the same way to get back to Skyhold (a months' round trip just for one trip to one restaurant). We'll go there next time I happen to be in town for an important visit.