Hahahaha- well to be fair I DO use a laptop for work and it is quite heavy duty and very powerful.
For work, I've got a Dell Precision T3500 with 3 20" widescreen monitors. For working from home (a couple of times a month), I've got a white-box Core 2 Quad with 2 22" monitors. For everything else, I've got my Nexus 7 and my Samsung Galaxy S3. I've not used my netbook for over a month, and my wife's got my 15" Samsung laptop.
From being anti-tablet (the £199 price talked me round to the Nexus 7), I've decided that you should just use the appropriate tool for the job, and I don't understand why people want a full-featured tablet at all. If you're that bothered about functionality and weight, get a MacBook Air or an Ultrabook.