Well...there are many artist here that use only Poser, and they are damn good, its like any other tool, when you get good at it you can make people say "WOW!". My advice, never go by what others say, always try out something new and form your own opinion of it. As far as printing goes, you can either export it to Photoshop by saving the rendered image as a .TIFF file, and printing it from PS or you can print it from Poser.

Ask me a question, and I'll give you an answer.