To give up a (well paid, professional job) because I hate it and it has made me ill?

[purplepencilcase]

Some perspective anyone?

I'm late 40s, professional. I have c.£500k in savings, £250k in pension. No house but also no debts.

Is it unreasonable to have a career break? Current job is making me ill and I need a break.

You can't keep doing a job you hate, of course it's going to make you ill. Take a career break, study something you enjoy, retain for something else. Do something that makes you happy!

This is interesting as today I haded my partnership notice in! In my early 40's I've spent my entire career trying to get to this point and I HATE my job. Earn lots but working 7 days a week and miserable.
The other partners arent happy but I'm going to take a bit of time off and freelance for a bit and see where the mood takes me.
My professional qualification means I should always be able to find some work and although I wont be ££££ I wont be poor either.
Get treatment/ therapy if you're burnt out but at the end of the day life is too short.

I have considerably less than you and I’m seriously considering the same I do not want to work until I drop. I’ve seen so many people die within years of retirement I’m not have it.

I would suggest seeing a careers counsellor or similar to see what you do want to do. You are 20 years off state retirement age.

Is yours the kind of job you can fairly easily get again if the grass isn't greener?

Depending on where you live, your savings won't even buy a modest house - I'm a similar age, I get it but still will carry on working (and I will own my house outright next month). Hopefully we'll have long retirements and we have calculated that we need £1m in pension pot between us to maintain current lifestyle (which isn't extravagant).

Negotiating a 3 month sabbatical is my plan for when I'm 50

If you are unwell speak to your GP about taking some sick leave, using HR and occupational health to support you as much as possible. Only when you feel physically and mentally well again should you consider your options. Maybe return to a different role, but only two days a week and some unpaid annual leave perhaps.
Hopefully that way you will still be earning/pension contributions and then in 10-15 years time you could consider retirement.

V similar situation. Jacked it all in 15 months ago. Will go back next year, maybe…. I have had physical illness as well.

I’ve done PT volunteer work which has been very rewarding and a learning experience in different ways.

Are you employed or self-employed OP?

I packed it all in the day I realised my job was affecting my mental health quite significantly. Retrained in an entirely different field and couldn't be happier even if I now earn a quarter of what I used to.

Do it OP. I did - my job wasn’t even making me ill, but I just hated the politics and looked at my seniors and had zero desire to be in their position.
The funny thing was that several of those same seniors took me aside at my leaving drinks and told me I was doing the right thing to get out and they wished they could do the same but were tied in with massive mortgages, school fees etc. So yes do it now while you can! I didn’t have nearly as many savings as you but it has all worked out well.