Verctor,
Solidworks is mostly used for manufacturing and design. Almost every product out there these days is designed in either solidworks, Inventor, or other similar CAD software. It might take days or weeks to design some product to specs in SW. ( for example if i you wanted to model a lighting fixture with very complex geometry). As a mechanical designer, if i spent 4 days to model such item, i don't want to spend another 4 days or so so model the same thing in Revit! Autodesk claims full versatility and compatibility, but the reality is different.