For me, I don't use Poser for rendering at all. Even the vaunted Firefly renderer is too much work and too much of a resource hog to for me to get good-quality images.

What attracts me to Poser is the content libraries. Daz, Renderosity, CP, and others out there have generated thousands of low-cost, good-quality meshes. While vehicles and sets are no problem to import into LW or any other app, the characters are the proverbial "holy grail" for me. I could spend upwards of $2K to buy C4D and the add-ons necessary to get the same functionality as I have in LW right now and then I could bring in the characters as well via Body Studio or Interposer.

Or I could spend $500 on PPro to get the similar functionality with my copy of LW via scene hosting or collada. That's what makes this attractive to me.

The common-user that dogor refers to is not a fixed base. People transition into and out of that base constantly. I suppose that I would have been a common-user at one point but at the time I was getting into 3D in a serious way, Poser was at version 1. It wasn't until Poser 6 that I started looking at Poser as a viable app to add into my workflow. And even then, I find myself pushing the limits of what Poser can do.
All I want is for Poser and LW to talk to each other without too much work involved. Make it work, and make it easy enough to use.

PPro does have the potential to start opening up new markets for Poser and Poser content. Even though I have run into a LOT of vitriol in visiting other forums and hearing what they say about Poser from the self-styled pros, I know that the real pros will use whatever tool will get the job done and not care about the pedigree.