I second aerostude's comments. Mate, just go and do what you want and what you love to do. I don't know what 'bad' things you say you hear about with the RAF but nothing an no job is ever perfect. If you ask me the worst thing about it is passing the RAF selection process for pilots. If you have a passion for flying for the RAF, go for it with all you've got cause you'll need that determination. In the future you can always move over to commercial aviation.
All the best.