Oh this thread could run and run!
DD1 gave up a lucrative career in Recruitment Consultancy after DGS1was born where she did 4 days a week after returning from maternity leave. She retrained as a Secondary Maths teacher as she hoped to have a "family friendly" job where at least she would share her children's school holidays and be home by bath time. She is at school before 8 each morning, having left home at 7.20 and what with meetings, standardisation sessions etc after school every day leaves around 5 to be home by bathtime. A daily nanny looks after 2year-old DGD on working days (3 a week) and takes the boys to and from school, including any after school activities. Ev nines are of course given over to planning and marking.
Why single out primary teachers? Not criticising them of course, but DD on her "free" days has detailed lesson plans to write along with a toddler to look after, marking to do including several regularly sets of mocks and/coursework reports to write, parents evening are compulsory and this year happen to all be scheduled for one of her non working days so she has to arrange childcare from 3 till after 8 do that she can be there.
A secondary teacher since the 70's I can honestly say that her workload exceeds mine at most points in my career even when I was running a department of 9.
I blame targets, league tables, lesson planning which seems to involve reinventing the wheel, constantly changing syllabuses and frequently "jobsworthy "management.
Lke workers in the NHS, teachers have to deal with some very disturbed young people, violence in the classroom, stroppy teenagers (!) and often violent parents. They have to keep calm., never resort to shouting, obviously no physical contact and sadly these days, sometimes malicious fabricated accusations which can destroy a life as well as a career.
Again like NHS workers I can remember how depressing it was to wake up to very day to be denigrated by the media, blamed for things which were often the responsibility of parents. It sapped your soul!
Despite everything I worked to 2 years beyond retirement age because the time in the classroom was fulfilling, rewarding, stimulating and I took a pride in my students' results. So briefly, it's not just primary teachers and it is not just young teachers!