Quote: "What I don't get is X is a heavily used format used in a wide range of languages (or used to be used) but 3d modellers don't have a native X format exporter which I just can't get my head round that. Surely the X format would be a must when creating these modelling packages this there's a demand for it. 3ds/Maya/C4D etc have formats that aren't even in use anymore."
Yes, that baffles me too.
Quote: "I don't believe it's necessary to triangualte objects."
I'm fairly sure the X format (and DBPro) supports quads as well as triangulated meshes [Edit: last bit added for clarity] - but a mesh saved from DBPro will, as you say, be triangulated. What other programs do is anyone's guess.