The only shortcuts I really take is using the button on my keyboard which opens up my Browser, it's symbol is a home, pretty neat. And F5 for refresh. Oh and tab.
But to be honest I just see it as the done thin, as opposed to being lazy.
I don't know how I ever lived before I knew the shortcut for changing my brush size in Photoshop! It's prob the single most useful thing I know! Lol I shoul learn general computer short cuts but old dog new tricks all that jazz.
I use a ton of navigation keyboard shortcuts when I use my laptop, because I hate trackpads. Then I use a ton of other keyboard shortcuts for normal tasks (like ctrl-c, ctrl-v, and all sorts of Windows key combos).