They're not COST effective!
Been looking at gDiapers, which are flushable & compostable & generally environmentally friendlier than the disposable we currently use. But until I'm independently wealthy, I can't afford an increase like that in my diaper bill!
Right now I get a case of Huggies at Sam's Club. There's about 170 size 4 diapers in there. It runs about $30. (I didn't have to buy any this last shopping trip, so I don't remember the exact numbers.) I buy the Huggies. No extra parts needed.
The super-cool gDiapers cost $52 for 128 liners. You also have to buy the cute (and they are very cute, especially the Hawaiian one) covers, called "little g pants." And those are $15 a pop. And you periodically have to buy new ones, cuz like all little clothing, babies are going to grow out of them on a regular (or in our case, accelerated) rate (he's 8 months old but currently growing out of his 12 months clothes).
I'm all for doing things naturally & organically, but there are limits of practicality. In this case, it's a financial limit. These, like so many other "green" products, are prohibitively expensive. Which is not to say it's a bad idea. Maybe they'll catch on. Maybe by the time I'm working on diapering child 3 this will have a couple of knock-off brands, or maybe Huggies will imitate them & those will be affordable. But in the mean time, I'm stuck with a landfill, as unpleasant as that is. Unless we decide to give up eating.