"...I can just use poser for posing,and getting different camera angles..."

Yeah, that is a great use. Hardly anyone ever mentions that when this subject comes up.  But then again I guess it's pretty obvious, altho I'm (in)famous for overlooking the obvious, ha ha!

Any pose(s) can be used again and again from different angles, focal lengths, perspectives, distances, etc.  Actually, there are lots of uses for this particular portion of Poser, even more if you have something like a Design Master projector or some such.

Larry F