Blimey, another holier than though PC mother thread. FFS, its not your baby!
Do you grow your own organic veg?
Do you not have a car?
Do you never use chemical cleaners?
Do you never wear cosmetics?
Do you use medication?
Do you recycle, reduce and reuse?
Do you make your own compost?
Do you buy fair trade coffe?
If you give the wrong PC anser to any of the above then i suggest you butt out. Yes you are right they have made a DECISION do use pampers and those awful orange bags, which i think stink, are you saying that your sister in law and brother are intellectually subnormal (which i obviously am cos i cant spell for toffee) and need you to take them to one side?
I made a DECISION to use pampers because IMO they are best for MY child, if anyone has a problem with that then they can kiss my rather large arse. There is a very good argument that the amount of water, electricity and detergent used in cleaning cloth nappies outweigh the benifit of not using disposables! I take it of course, you use a mooncup.
Now excuse me while i go and switch off the tumble dryer and climb in my 4x4 to go to the corner shop and buy some more pampers.