That sounds simple enough--until you send the PDF to a print shop that has Corel, and it screws up your PDF.
It's never as simple as "Save As" when bumping to another program and it's a waste of time to recreate a design in every conceivable design software printers/publishers may have. There's Adobe, Corel, Serif and Open Office. And who can forget MS Publisher!?! At some point, you just have to figure out the tweaks that make a file work when exporting into another software, and do your primary design in the one you're comfortable with.
I realize that you have a workflow you're comfortable with. "Busting Aishwaria's chops" for doing things differently, however, is not helpful to him or to those of us looking for an answer to the same question.