There are not automatic pay rises (and I wouldn't agree any of the other conditions are 'generous' comparatively), but even if you knew what you were talking about, how does that change the level of exhaustion?
Teachers arrive before school starts, work after the day ends and do as many additional hours as necessary to prepare and follow up the core hours. Even with other salaried professions, I don't see a clause that says as many additional hours as necessary to discharge duties.
This half term in an average secondary school has entailed teaching 132 lessons separate lessons, which all needed planning, each kid (so about 150 per teacher for a core subject) needing at least three pieces of written feedback plus a marked assessment, before a full suite of mock exams marked, moderated, data entered, judgements made and grades forecasted, followed by meetings with parents and carers scheduled in the evenings.
Today was the first day since returning for the new year that I didn't need to work to keep on top of/catch up slightly with the demands, and that's without the fact that a full day without even a break without a duty is full on. There's no sitting and taking your time on a computer or having a chat through things with a colleague. It's meet the kids, get them started, teach them something, explain simply but clearly, manage their behaviour, check what they remember, show them something new, talk them through how, do it with them, let them try and watch like a hawk, deal with the fact they're children and don't want to be there, assess what they know, show them how again, put up with their rudeness, interruptions, and inability to pay attention or be around other people for hours straight.