Very interesting question, which resonates with me as I am in a similar position, although in a different line of work. I am the same age as you, and my child is the same age as one of yours.
Reducing hours would have a significant effect on my pension.
My workplace is tough, and increasingly toxic (and unfortunately across my industry it is the same, so changing jobs isn't the answer). I am content that I have achieved the level of responsibility and recognition that I want to achieve.
My main professional goal is to survive(!), but otherwise I still want to do a good job for the people that I work for, and to solve problems and improve the services for my current employer. This is very much now on a "sorting out problems as they come along" basis rather than having a strategic plan of what services and in what order. Not even a 5 year plan.
I am becoming aware that my child is growing up and feels like their childhood is slipping through my fingers whilst I have been worrying and stressed about work. Whilst I realise that I may have enjoyed them more when they were little, I understand that they might need me more over the tricky years ahead.
My parents are also needing increasing support, and the rate at which more is required of me is accelerating.
I am also aware of how precious life is, and how it can be snatched away. A number of my contemporaries died when we were relatively young (all due to different unforeseeable reasons). I also have seen different experiences of retirement. On one side of the family, there have been long and enjoyable retirements from the age of 50 upwards. On the other side, there was working for a few years post retirement age, followed by a few very significant bereavements and then death within a couple of years, so no opportunity to enjoy the fruits of long, hard effort.
I am concluding therefore, that I do want to retire early. However, I think I would like to get past 50. For no good reason, it feels a bit wasteful for me to be retired before then.
My husband asked me what my plans and aspirations for retirement are. And I don't really have any. He made the very good point that my plan can't simply be "to not have to go to work". He is right. Reflecting on it, I am not very good at doing nothing and relaxing. I do need to do stuff. I like to be helpful and I don't particularly have a desire for getting credit for what I do. I would like to be able to use my skills and experience rather than feel they are wasted at a relatively early age. I also like to acquire new skills and knowledge.
So, probably, I also need to keep going until I have some sort of an idea of what I would want to do afterwards, as I also don't want to be bored and aimless just because I didn't bother to work out what I wanted to do.