I am working at the moment on a little online-shopping system... and I have all written to work with sessions only, I do not use cookies at all.
Now as I browse through the forums, everywhere I see people who work on similar projects as I with cookies also. Now is it bad to have a shopping & login systems to work only with sessions and not use cookies? I mean I can do it all with sessions, but is there still a reson to use cookies?