I just don't get why teachers think they work so much harder than anybody else.
Comparing now with then is pointless re when we didn't have and now we do have inset days.
The reality is that you as teachers are paid on average a sum equivalent to many others working a 48week year, less public/bank holidays. That equates to ~232 days a year of work. Which is 37 more days than teachers are required to work.
I would think that that, combined with the minimum 2hours at the end of every single teaching day, should be sufficient to mark, plan, organise your classes, and do the odd training day.
I know that the curriculum rolls over, so many lesson plans are rehashed from year to year ( told to me by teachers I know). You are not reinventing the wheel every year.
I am not sure why you think you should be paid more than your existing full time wage to do a a full time job?