The most important thing I can tell you is that QA is about as interesting as it sounds. Quality assurance. Here's how your shit is broken. Oh, you don't think it's broken. That's cool, but it is. Oh, you're not going to take my advice, and you're going to release it broken. That's cool, but now you have bad reviews. What do you mean, "this is QA's fault"?
That's my work. All the time. Sure, there are rewarding moments. When something I suggest needs to be fixed actually gets fixed. But that's such a small percentage in the face of all the times I deal with people who don't listen, people who don't care, and people who get hard-ons at the thought of meeting/exceeding a numbers goal. I don't give a shit about your 'records', you dick!
So my advice to you is that you do something else. Do something that doesn't involve people. In fact, just work with kittens and puppies. They're nicer, fluffier, and less likely to tell you that you're a moron for daring to suggest that their pet project is anything less than God's Work.