[quote=@ZB1996]
[@Cyclone]

Well, if we're going to take the scientific as opposed to the scientific approach, no species should then be able to interbreed.
[/quote]

[s]If the species in question is really close to human (like with dwarves) it's reasonable. Half trolls push it, and half-orc or something would just be ridiculous.
[/s]
[quote=@Isotope]
Yeah, frankly I think we should just handwave it and make it possible for most species.

Why?  Because it creates a potential story element.
[/quote]

Half breeds have always been something that have irked me in fantasy, so I'm probably going to remain opposed to this regardless. Why not just have ethnic tension within your species (I'm doing that with two main ethnic groups for the humans in Moravia) or something like sexism (also in the Commonwealth, and something that will probably lead to a diplomatic faux pas or ten with the nations that have female leaders)?