VISA and MasterCard and PayPal stopped backing them for a reason... BackPage is linked to things like Child trafficking and Child prostitution.
So we are saying... It's cool.. if you do not want to support this, we will.... What is that saying about us?
I know there are loads of legitimated businesses also being influenced by this decision, and those are the added bonuses... but the ugly and dirty side of this must also be considered.
We are already labelled as drug smugglers "Silkroad" and scammers "MtGox" .....This will just add further fuel to the fire.
You are right to some extent but it is unavoidable. Even when the worst child port website would accept bitcoins, we could not do anything.
Besides that... your concern is a bit like the conservative politicians that cry that bitcoin is used to fund terrorism. Let's forbid bitcoin because it is possible that this happens. You wouldn't want that and would claim that this isn't what bitcoins are for. It's the same with backpagers.com. Disallowing the whole page only because some bad actors are there is going too far. Next step would be to disable internet because bad actors are in there.
I think you got what i mean.