Depending on who you get your broadband from, you may be able to use their wifi hotspots when out and about. Or if there is free wifi you will be able to use it.
I was discussing iPads with some one at work recently - I have my own, he has one from work. He described it as being like a book or magazine - you just pick it up when you want to use it - you don't have to go and switch on a computer!
One problem however, is getting a shot of your own iPad when there are others in the house!!
One thing I would say is regarding printing - yes you can print but only if you have a compatible wireless printer, or, as in my case, a printer that you can "share" on the netwrok, but my computer has to be on first!
As for word etc., there,s always Gogle docs, or plenty of apps that you can use - if you've got itunes, just go and visit the app store via your computer.
Also, if you get the adapter you can output most iplayers to tv or monitor. With the supplied safari you can output video, I would recommend Atomic or Mercury browsers to output webpages to tv etc.