I use biodegradable nappies, wipes and nappy bags. Haven't always done, but over past 12m ish I made the switch. Not so expensive now DC goes through far less nappies per day.
Was talking to a friend yesterday who also uses them, and she said she believes that if you can afford them, you have a sort of moral obligation to use them.
She was pretty high handed / vocal! Basically that it's our environmental responsibility to use the least damaging products we can.
If that's what it costs to do so, then that's what it costs, is her view.
I'm interested to know what you lot think? is she BU?