Your comment reveals something often overlooked by the crowd shouting "OMG Bitcoin doesn't have chargebacks". Most people shop from merchants they trust, most merchants are honest, most disputes are resolved without chargebacks. Therefore chargebacks aren't really that needed or that important for most transactions.
IOW: you would have no problem paying Amazon in bitcoins, because you trust them.
IOW: you would have no problem paying Amazon in bitcoins, because you trust them.