^I think 30-40 is a very good salary, no matter what job you do. Where I work, the cream (and I'm talking firsts/upper seconds from very good unis) can expect to earn that after at least 5 years work. They often work very, very long hours (40-50 hour weeks are not uncommon in the busy season), are studying in their spare time (a requisite for progressing), have to pay for travel to work, buy suits/tights/heels/haircuts, and have demanding goals which they have to achieve or they're out.
You don't have any of that if you're a nanny.^
while I am not going to despute that 30-40 is a dammed good salary, I have been a nanny for nearly 8 years now and I've found it very hard to get near that salary. thats if I can even find an employer that deems me worthy enough to pay my tax/NI in the first place. but I'm happy with charging £8ph nett as although I have quite a bit of experience, I'm not qualified
I am currently about embark upon a full time job (55+ hours per week, every week - every season is busy season when you're a nanny) and also undertake an NVQ3 in childcare in my spare (!!) time
I will admit that I have the perks of a one bedroom flat inculded in my job, but if I was live out are you suggesting that I don't have to pay for the things you mention??
as for demanding goals that have to be achived, I am in charge of someones life, everyday... I don't feel that there is a challenge higher
so while I am sure nannying looks like something us girls do to earn a quick buck, I assure you it isn't.. but I wouldn't change it for the world.