I always think the same when you see the attitude that most billionaires have. The one enormous advantage they have over most ordinary folk is that they can have (virtually) whatever they want in life and never, ever have to worry about money.... except that, for the most part, their every thought is consumed with how they will make their next billion. If you're still going to stress about money (albeit from a far more privileged position than a single mum who doesn't know how she can feed her kids), what's the actual point in having so much of it at all?
There's definitely an element of it being drummed into them from a very young age, so they know no different. You can even tell the clear differences in how the 'heirs' are brought up compared with the 'spares'. Many people have asked what would have happened if Andrew had been born first, but the point is moot, as he would never have been allowed the freedom to 'stray' in the first place (although Charles had quite a long close association with a certain former DJ and TOTP presenter). They're told that they will be king/queen one day, and it's never allowed to cross their mind that it may not be compulsory. Even just having to listen to that song multiple times a day would drive a 'normal' person off their nut!
It is a huge gilded cage. I reckon that they probably see all the responsibility and lack of freedom and genuinely believe that they've drawn the shortest straw in life. Maybe they have, to some extent. I love the fact that I can go about doing simple, mundane, often boring things when it suits me and not a soul could care less, as I am a nobody. Similarly, I can go through life making silly mistakes and errors of judgment and nobody is filming or reporting on it, as I hold no interest to anybody other than my family and friends. Yes, it's a life of 'service' but in no way comparable to the servitude that many normal people have to perform.
I think the PP summed it up very well in that we have no choice but to have them as our monarch, whilst they have no choice but to be the monarch. It would make much more sense, if we are going to keep the system, to have a ruling royal family, all sharing the duties and recognition equally, rather than it all falling to one of them and the rest getting much of the privilege with little responsibility; but monarchy doesn't work like that at all, and it would collapse again after one generation.
It's so bizarre to think that, whilst people who end up in menial NMW jobs still have to go to interviews and prove their ability to fulfil a relatively simple role, somewhere else, a baby is born and instantly promised the very top job will be guaranteed theirs at some stage, and all they have to do to get it is to stay alive long enough!