<<Most consumer level digital cameras do not have fast shutter
speeds and are not good for taking pictures of sporting events, etc. They do not capture fast motion. You have to get a fairly expensive digital camera to get a faster shutter.>>
Absolutely! I do a lot of digital photography (do far more personal/professional photography now than art) and while I'm pleased with my camera for some things (close-up nature photography, taking pics of student artwork, etc.) my Nikon Coolpix is basically worthless in low-light situations or when I'm trying to photograph sports events at school. It's incredibly frustrating!
Unfortunately, I don't have the budget to upgrade significantly (or at all at the moment) and so there are real gaps in what I'm able to do with my current camera.
I think in trying to evaluate what type of camera you need, you need to first figure out what you're going to be using it for and then compare all the specs on different models.