What do chargebacks have to do with a currency? Chargebacks is something offered by services built on top of the currency, not the currency itself. Else tell me how to chargeback USD bills.
If you think chargebacks are the most important thing mentioning when attacking Bitcoin, then it seems like it does have a bright future.
If you think chargebacks are the most important thing mentioning when attacking Bitcoin, then it seems like it does have a bright future.