I'm a huge fan of web-based email.
IMO, it's silly to store your email on your machine...for just some of the reasons you mention, Vin.
One of the side benefits I discovered was, when one notebook died and I went to a new machine -- remember all those serial numbers for your software ?
Well, they weren't sitting in email on my now dead computer...

Made getting up to speed on a new machine MUCH faster...
Besides -- what's not to love about G giving you ads for all sorts of spam recipes when you go to clean out your spam folder?
Live JoyFully!
Judy