I also have a Nexus 7 (first gen, they are now on round 2) and I love it. I did even put a remote desktop app on it allowing me to connect with my regular computer and access all the programs that has (like Excel and Word), but I have to say, I cannot work effectively on the Nexus -- I can make a few changes to a file on the fly if I need to, but that's about it. I did look into whether ANY tablet would replace a laptop when my work "owed" me a new laptop (replacement schedule) a few months back and in the end decided the answer was no -- that for the price, the tablets that got close were too expensive and not small/portable enough to improve on the laptop functionality.
I don't use the camera on my Nexus at all. Can't comment on that. I can say it's pretty sturdy; I've dropped it 4 times, including on the sidewalk running for a bus, and it has survived.
Long story short it is sturdy and readily portable, GREAT for consumption (accessing things on the web, pdfs, and ebooks -- I have a Kindle app), good for communication (gmail; I do have an add-on real bluetooth keyboard I bought at Newegg.com for about $25), and pretty lousy for creation or even editing of real documents. But my general sense is that this is true of tablets across the board.