Depends on the cost for a little ease of mind!!!
After my HP R717 camera went out on the 16th month of ownership and being told it was too expensive to fix and that a replacement one with a 15 day warranty would cost around $200.00 to replace with a "refurbished" model but I would have to send them my "broken" camera in exchange. Obviously not that expensive to fix...
I WISHED I HAD A WARRANTY !!!!!
This was after talking to Customer Service/Repairs for HP.
So now I have a $200.00 paper weight on my desk to remind me if the cost is not that expensive a little insurance may be a good thing. Oh and to remind me to not buy from HP again and tell everyone I can about my experience.
Sam's Clubs have a very inexpensive warranty for their Electronics. I just purchased one for around $5.00 to extend for another year past the manufacturers warranty for a new DVD player I just purchased for the kids.
Read my Review under "HP Photosmart R817" at Cnet....