Hi all, I'm the OP but have namechanged - I have just found my original thread through googling parquet floors, and have seen the later replies! Glad some others have found similar discoveries under carpets. 
This did indeed start as a very show-offy thread, but I'm feeling rather sad about my floor now and need to make a major decision...
In the 2.5 years since we moved in, we still haven't renovated the floor. We've been getting planning permission for an extension and various other frustrating things... Anyway, in the interim the floor has ended up getting damaged.
We had a pipe burst in the concrete floor, and a rogue plumber actually dug a trench through our floor in the living room, in the panic to locate the leak. I was heartbroken. We've kept the fingers and had some flooring specialists come round, and they said it is quite a tricky job to repair. Since then, we've also had bi-fold doors added to the lounge and we also need to replace our staircase - all this will mean extra repairs. There are also lots of scratches and fingers that have come loose, and it looks a lot more worn in areas than it used to. 
Our best quote was over £1200 to have the floor repaired and sanded down, but the state of the floor has deteriorated a bit further since then. I think it will be quite a lengthy and disruptive job.
Someone commented last week that he didn't think it was a very good quality floor, as the fingers are only 9mm thick and it was just laid in sheets in the 1960s without much care. He also said he wouldn't recommend using a belt sander on the parquet, the vibrations could loosen the whole lot. So, it got me thinking the unthinkable... is it actually worth saving?
DH thinks not, and wants to replace it all with strand-woven bamboo throughout the downstairs. I was also thinking that if we remove the parquet we could insulate on top of the concrete floor, as we are planning to insulate the rest of the house?
Sorry for the wordy update, but what I'm asking for is a quick poll really - would you repair or replace?