This is true you would be on your own, but there are thousands of us ex-pats out here in fact Paphos alone has 19.000 of us, many are older and manage very well, you will be covered once you reach UK retirement age for any health problems, and none of us ex-pats would not help if we could.
I find your comments a little strange that you cant find anyone on ''CyprusLiving'' that is not on there own, have you joined the forum and asked? I know of at least 100 members who live here happily on the own, and join in on our members get-togethers, that we have often.
In life you take many chances and when that last bell tolls would you like to say to yourself ''if only'' ?
The decision we made to come and live here , (I may add on a very tight budget) was the best decision I have ever made.. I was then 54 years of age, that was over five years ago..and a lot of Keo's
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I am far from rich, I live very modestly but rich in the quality of life in Cyprus.
My advice just do it!! life is just too short!