I think your attitude to pupils is harsh and ill judged. We harrass, over test and pressurise them into anxiety and ill health in the pursuit of exam results, which no longer promise the rewards of former generations. The amount of homework given from absurdly young ages is a disgrace. I don't like the news shots of whooping and weeping schoolchildren receiving results but it's not their fault. We have acted as if every child should be academically stretched and developed without thought for the majority, who do not benefit from this madness.
On the subject of homework: My son is in year 7. He hardly had any homework to be done throughout his primary school life. I expected that to change as he went into secondary school, but he still just doesn't get much at all maybe a couple of hours a week. He just does not have anything like the amount of homework I expected him to have in senior school, certainly less than I had at his age.
My other son is just going into year 2. He has only 15 minutes of reading to be done each day.
I really don't think the amount of homework given is anywhere near a 'disgrace'. In fact, it's closer to being a disgrace that they don't do more.
On the subject of exams: I see absolutely no issue with putting pressure on kids to do well in exams. Of course, i wouldn't be putting too much pressure on them, but certainly they should be pushed. I am of the opinion that it will prepare them for life, where you are constantly assessed. I certainly am in my job. I have constant deadlines and 'big meetings' where I need to prepare and perform well in. It's our education system's duty to prepare kids for the outside world of life and work, and that includes the above IMO.
Assessing is also simply one of the only way of ascertaining whether schools are doing a good job or not. Ofsted is part of assessing (another contentious issue), but ultimately the best assessment of a school's performance is to test whether the kids have learnt the sylabus or not. No doubt being a teacher yourself you'll inform me that all teachers (and school leadership teams) are perfect/great and don't need their performance monitored at all.
Your comment about the school system not fitting everyone is another matter. If you believe they are testing the wrong skills (i.e. too academic, or not focusing on a rounded curriculum etc.), that's entirely another matter. It's not related to whether assessments are right or wrong IMO.
My mum was a primary teacher too (recently retired) so I have pretty good knowledge of this subject area after years of seeing the pressure she was under to perform either with KS2 examinations or Ofsted. Oddly enough, I also studied a couple of interesting education modules in university discussing the arguments for/against different methods of assessment and the reasoning behind them. So i like to think my opinions are at least a little bit informed.
If you don't assess the kids you simply lose the ability to make sure your schools are doing a good job. And before you suggest it, schools clearly can't be relied upon to mark their own homework, if you excuse my pun. That has virtually been proven by the number of inflated exam predictions in this instance.