HTC Hero :: Does Anybody Else Use Trackball Extensively?

Two things I think my Hero could do without7 Home Screens - I really don't need all that real estate on my phone. I think 3 or maybe 5 at the most would have been plenty. I feel compelled to fill each screen with all the really cool widgets but I presume this will have some performance cost on my phone. I know I could use a different Home app, but I'm trying to use Stock applications wherever possible to reduce app clutter.Trackball - I hardly ever use it, apart from maybe some precision clicking on links in the browser. Does anybody else use the trackball extensively.Maybe I'm missing a trick here.

I just sent an email and without thinking about it used the Trackball to navigate the cursor around my message... Looks like the Trackball might actually be quite useful after all.