This thread has gone way off topic lol but allow me to add to that with my 2 cents...
Yeah, but the thing is, have the devs ever said why two Grey Wardens can't have babies? They say it's a fertility problem. In real life they have treatments and medicines to help with infertility and Thedas has magic so it seems like treatments to help get someone pregnant should exist. What is the problem for a male GW? Low sperm count? Tainted sperm? In RL, there's medicine and diets for that. Woman; no egg production, tainted eggs? In RL, there's medicine for that... In Qunari lands, supposedly they have "advanced" medicine (whatever that means... since they're in medieval times), so maybe a quick trip to Par Vollen would help with things. And maybe mix the medicine from Par Vollen with some magic potion from the experts on magic in Tevinter, and boom, baby. I never romanced Morrigan, but I heard that you can only have sex with her once, then she breaks it off because she's afraid of her feelings for you or something like that, but yeah, if the HoF can get a girl pregnant from a one-night stand, then where's the logic in that(if they supposedly have "infertility")? Also, the DR thing. She obviously used some kind of spell to ensure pregnancy. I mean, how could she get pregnant so quickly? What about her cycle? Babies don't fertilize overnight. She obviously did something to make herself ovulate and then speed up fertilization so the embryo could exist by morning, so it could absorb Urthemiel. I know it's possible for a GW and normal person to have children but the way it happens with the DR is impossible unless you use magic. And if Morrigan can do it, why not someone else? Just because both people are Grey Wardens does not rule out the possibility that the "dark ritual" can work for them.