We are not able to see the future so the only indication we have of how we will survive old age is to look at our parents, if your dad & granddad died from prostrate cancer or had a heart attack at 50 then be worried.
My dad is 83 and could still work if he wanted, my grandad died at 89 after tripping over a curb, he was walking the 5 miles into town every day before that.
I think The best investment you can make is in your self and your company, you can put £40 a week into a pension or spend the same money on learning to restore stone & marble.... I believe the best investment is the training course. The problem is people don't see knowledge as an investment.
Last year I found out I need both my hip joints replaced and was due to have them done in December but there was complication so now have decided to live with the pain until the pain medication stops working. At that piont I took a big look at what I needed to do,
I see my son as my main investment over the coming years he will do the courses , he now can do the work. as I go into retirement I will take a back seat and let him reap the rewards of what I have created, but I will still take in income from the company that will be my pension, I have worked out that at this time I could take a £300 a week income from the company and my son will still have the lions share, this is better than any pension I would get if I had been paying for years.
But.... In the end we play the cards we have, no piont thinking about pensions if you're 50. my plan is based on maximising my own circumstances if I was 25 years younger my plan would be different