On the contrary, I agree with @TillyTrifle Bit of a harsh with her words, but I largely agree. Some people work very hard in the workplace, and get trained, and acquire extra qualifications, and work their way up the career ladder, and after 10 years in the job they are often still not on the £50K a year the OP is demanding.
Society does not 'f'ing hate mothers,' but expecting to be a stay-at-home-mum for 15 years, and then drop straight into a £50K a year job with fuck-all experience in it, (or qualifications) is farcical. Stay at home mums contribute to society, and they do a valuable job raising the next generation, but it's just insulting to people who have been constantly in the workplace for 2 or 3 decades, racking up experience and qualifications, to suggest a stay at home mum of 15 years should just walk into a £50K a year job.
Whilst I don't want to berate stay at home mums, I have to say once the children are at school, it is NOT a hard life. It's an easy life for many, and I think those who are able to do it should count themselves very lucky. Many women have to pretty much do everything they do, AND go to work!
And I have every right to say a stay at home mum is an easy life once the children are at school. I have been a stay at home mum (was for 9-10 years,) a part time working mum, and a full time working mum. I can honestly say being a stay at home mum (once the kids were at school) was an easy life.
As has been said though, I was quite glad to start earning my own money again. You make yourself very vulnerable if you are a stay at home mum indefinitely/for many years.