I've been using Outlook 2003 pretty much since release until about a year ago, when I weaned myself off it. Now, as a Gmail user for many years and Android phone owner for almost three years, I've binned it completely and just use the browser on my PC (laptop) for all my email accounts - Gmail, Hotmail and Freeserve. Google takes care of my calendar, contacts and tasks too, and everything syncs seamlessly between all my devices, so Outlook really is redundant for me.
It took me a while to become happy with the conversion to the web, but now I am quite happy with it and would not go back to the old way of doing things. Everything stays safely in the cloud - anything I read gets archived rather than deleted - and I don't have my PC cluttered up with ever growing files and a bloated registry. If I re-install or upgrade my OS then no worries about re-installing and configuring my Outlook either. Google remembers and syncs all my bookmarks, and all I need to do is to fire up my browser, log into Google and carry on with business as usual. It matters not whether I find a PC running XP, MCE, Vista, 7, 8, OS X or Ubuntu. One logon to Google gets me to all my stuff instantly, anywhere in the world. That's much better than having my Outlook files languishing back home or gone for good when my hard drive packs in or gets stolen.