In some cities there is a service which collects reusable diapers, gives you clean ones. It is quite handy. I don't see as a problem to use reusable, there are so many types you can choose from. There is biodegradable option as well so if they won't end up in the landfields it is not such a bad idea. And in some cases like durig the night or travel to use disposable.
As well studies shows that cotton diapers are healthier. As now we have all great washing machines and dryers I don't see a problem of using the washable.