Of course fiat can be used to purchase porn and drugs too but fiat can also be used to pay your electricity bills or groceries at the supermarket - i.e. legitimate stuff. BTC doesn't quite have the same level of support yet. Businesses that accept BTC are still quite rare and having pornography become such a large part of the fledgling Bitcoin industry at this stage is probably going to hurt society's perception of the currency and possibly negate whatever economic benefits it may provide.
Anyway, that's just my opinion.
I like your perception, but I think the purpose of why bitcoin can be used in pornography and gambling site is almost internet users like the sites. I mean, we can buy groceries or any stuff what we need openly in market, yeah real life market surely. But for gambling and pornography, people love it and will spend their money just to get some pleasures from there. The problem for them, they don't want their family or relations know about it, [...]
Their families and relations can still know about it if the wallet/addresses they use for those activities can still be linked to their known wallet/addresses.
True. Besides, the technology to link addresses is also improving rapidly and any improvements in the field can be applied retroactively. Even if someone used coins to pay for porn or drugs using a method that the best technology in 2015 can't trace, he/she could still get into trouble several years down the road.
Of course fiat can be used to purchase porn and drugs too but fiat can also be used to pay your electricity bills or groceries at the supermarket - i.e. legitimate stuff. BTC doesn't quite have the same level of support yet. Businesses that accept BTC are still quite rare and having pornography become such a large part of the fledgling Bitcoin industry at this stage is probably going to hurt society's perception of the currency and possibly negate whatever economic benefits it may provide.
Anyway, that's just my opinion.
I like your perception, but I think the purpose of why bitcoin can be used in pornography and gambling site is almost internet users like the sites. I mean, we can buy groceries or any stuff what we need openly in market, yeah real life market surely. But for gambling and pornography, people love it and will spend their money just to get some pleasures from there. The problem for them, they don't want their family or relations know about it, [...]
Their families and relations can still know about it if the wallet/addresses they use for those activities can still be linked to their known wallet/addresses.
It's not difficult to make a new address for each payment though. Most exchanges pay you from a different address than the one you use to send them Bitcoins. it's easy to send your Bitcoins from your exchange account to a new address each time you want to buy porn. The only downside is waiting an extra hour for your transaction to a fresh address to confirm.
Most exchanges keep records of transactions, IP addresses, email addresses, browser signatures, etc. I would prefer to use a service like Bitmixer.io if I wanted to mix coins properly (and even then, I still wouldn't feel completely safe because of the above).
Also, Coinbase has been shutting down accounts associated with gambling, so there's another danger there as well.
Oh, and fuck the ignorant perception of society. They'll change their mind over time, but then it'll be too late for them anyway.
I agree with the principle that people should be able to buy anything they want with Bitcoin.
My concern was that if Bitcoin were primarily used for underground purposes then it could sour public perception of the currency and possibly delay it from achieving mainstream adoption. Some people might think that this is a legitimate concern, while others might think that this isn't really a huge concern at all because Bitcoin's technical strengths will allow it to eventually prevail in the end.