"Disposables bio-degrade faster than terry nappies in landfill sites"
um - since when???? i would be REALLY interested to know the research that has proven this!
"Disposable nappies don't require washing and drying which uses up energy, gas/electric, water etc"
but they DO require manufacturing - each and every one - which also uses up energy, gas/electric, water etc
"Terry nappies are often produced in '3rd world' countries where conditions are not very 'green' at all"
Tota Bots are made in Scotland - Motherease are (if I recall) made in Canada. But even then, if they were not very "greenly" manufactuerd I would far prefer to have 20 reusable nappies whose manufacture impacted the environment than 4500 disposables. I think it is the Pampers website that claims that there is not much difference in the manufacturing implications of a single reusable and a single disposable - you can bet you boots that if the maufacture for disposables was greener then they would have said so!
"Terry nappies are not used on their own anyway, liners and plastic pants are used too, all having to be produced and disposed of."
True to an extent - although the environmental impact of a single thickness liner (little more than a tissue) cannot be much. Yes you need something over the nappy - hardly anyone uses plastic anymore, but if you did then you still don't need more than 3 pairs of plastic pants. Not a lot of impact there - just compare it to the wrapping on the bags of nappies you buy - that will add up to far more plastic I am sure. Also, a lot of people use reusable liners and as I say most people use fabric overpants/wraps now too.
In your not bvery well thought out objects to "real nappies" you seem to have forgotten the basic tenants of sustainable living. "Reduce, Reuse, Recycle". Washable nappies reduce the amount of manufacture and waste. They are clearly reusable. If you sell them on or buy second hand then you are recylcling too. Disposable nappies do none of these things. They are teaching our children that we live in a disposable society - once something has been used it should be discarded, with no thoughts as to the impact on tomorrow.