Video game development is a pretty sucky career field. If you're working for a big company, you're a slave who is overworked and underpaid, and you could be making much more money with better benefits doing CGI work for television advertisements or programming websites. The indie landscape is bleak and chances are you will never deliver a hit, so you will be constantly trying to push out tiny games that don't have the production values you wish they had just to keep your head above water.
That being said, QA testers are at the bottom of the totem pole. They're treated as second class citizens and are considered to be the most replaceable job. "There are lots of people willing to be paid to play videogames!". Plus, companies are tending to treat their customers as unpaid testers anyway. Buggy launches are normal now. QA tester is probably one of the worst career choices you can make. Very few manage to stick around.