Alexander,
It depends on what an entrant wants from it and what they end up choosing as a trade/branch. For a kid who wants a first job with a bit of beer money, yet still needs a bit of mollycoddling (sp?), the junior ranks will get him/her fed and clothed, while regular privacy invasions under the banner of 'welfare' are included to remind people they are thought of as kids. This continues until an individual leaves or is promoted. For first job experience it's not bad, but the enlisted ranks aren't really a career unless you're short of other ideas/options. (I'm a SNCO btw...)
Separately you can join as an officer. There are certainly benefits, but the cost can be high too; you are expected to act a certain way - often contrary to normal human behaviour, such as eating an apple with a knife and fork or being nice to people you hate. It makes 'them' better than 'us' enlisted lot and far better leaders in battle...apparently. One of the biggest perks to being a officer is instant expertise on most subjects. Combined with a natural ability to talk down to anyone displaying lesser insignia, officers have made the RAF the organisation it is today.
Apart from choosing whether to enter at council estate or superhuman level you also need to decide what you want to do. If you enter as, say, a RAF policeman (enlisted) you'll have no mates and will only get a job at your local cinema when you leave. However, if you join as a pilot you'll not only get to fly, but will be genetically capable of doing anything - running a chess club, signing multi-million pound contracts and even commanding a whole RAF base! No experience necessary! The best bit is if you screw-up or waste money on promotion-enhancing ideas you're unlikely to suffer the consequences as you'll probably have gone by then! After the RAF you'll easily get a job as most people think military officers are like Ben Fogle.
So, in answer to your question - join as an officer, as a pilot. Everyone else is more of a prisoner than an employee.