I have seen some people frown on a testing career! Simply put it, they are just naive. Although my business card says "developer", I could have been a great QA personnel. I have great respect for any individual with a passion for QA, which makes any product presentable to the customer.
Those are some reasons why testing is great, as Murugan Pal spells it out very eligantly. I bet that the list does not stop at 10... but this is a start.