I'm sure Dr Bob is financially sophisticated enough to do the sums for himself, especially as they are, in essence, blindingly simple: will my savings/pension scheme/investments produce the income I need to live the way I want in retirement?
This is not so much about money but about deciding what sort of life you really want to have - and a surprising number of people have rather vague and unrealistic dreams. Witness all those life-long city dwellers who have suddenly decided that country life is what they crave!
Dr Bob seems to be pretty clear on what he wants so I suspect he's pretty much made his decision. Good luck with the plan and make the best use of the fruits of your hard work!
Something that I have not seen much discussion of is "social care". Personally, I very much don't want to have to rely upon our local government worthies to look after us in our dotage and instead hope to have sufficient assets to choose our own care providers. There are too many horror stories of councils shutting down care homes and summarily moving everyone out to somewhere of a lower standard or miles away from family.
Budget £30k - £50k p.a. at today's prices - more to be sure of adequate cover. I read somewhere that the average stay in a nursing home (£50k p.a.) is 3 years so I reckon about £500k should do it for two people in most cases. This is a lot of money, and beyond many people but well within reach of many of those commenting in this thread.
Personally, I don't see why a young family struggling to pay student debt and a massive mortgage with uncertain job security should pay for my care if I have sufficient assets, so I have no difficulty with the house being used to pay for care. I realise that not everybody feels that way but we all have to make our own minds up on these sort of things.
BTW, retirement is great
, go for it!
Duncan