I think you are trying to say that bitcoin will fail to become a mainstream currency because 60% of the world population don't have access to the computer. If I am understanding you correctly, then let me assure you that bitcoin is not structurally built and fit for becoming a mainstream currency in any way. It is an experimental virtual currency which implemented the idea of a decentralized currency successfully for the first time through blockchain technology. It is not trying to become a mainstream one.

So bitcoin will always be used by those with a certain level of technological expertise  and not by any common people. Even though the process for bitcoin payment has been made very simpler by many third party wallet provider, but majority of the governments will not want to allow bitcoin to mingle with their own centralized currency system. It is and will always remain as a digital currency and an excellent store of value.

Thanks for your response, now you convinced me and I think differently. Thanks for giving me a new point of view

No quality bitcoin wallets or miners exist in Smartphones (at least the ones i know)

No this is non stop so in the future the crypto spread little by little and it's will authorized all around the world,This is like business but more chance to succeed because we need this in life and here we already can earn while we are having some knowledge and that's every person wants in life,Moreover it's gave more conveniece in anything so it will continje to rise.

Yes actually i agreed with you most people now even in urban area or near the city have already mobile phone they easy to access bitcoin if they know how to used it. People now start facing the great technology so therefore there's a chance that bitcoin to become well known nowadays. I think your rate in people not having internet connection was not right maybe now is in 45%. Nowadays bitcoin get more popularized in all countries.

The digital era has grown very rapidly. So, for those who have internet access and use it to earn an income is a very profitable thing. Moreover investing with cryptocurrency. This is a great opportunity for modern society.

Poor bastards, imagine having to suffer the indignation of instant, free, fraud free payments.

Cellphones are computers and the penetration rate is much higher than PC ( 5 billions at present time). For example Kenya and Zimbabwe use cell phones as a way to make payments as not everyone has access to bank account. The synergy between cellphones and cryptocurrency will be a huge market (estimated to 500 billion in  2020).  TelCoin is an example of cryptocurrency that tries to target this market.

The statistics you gave is rather on the high side considering the fact that the world is now a global village. I believe even in most rural area people have access to either a computer or mobile phones with internet facilities. Bitcoin will keep gaining world wide acceptance as the years goes by. However, it might not become a mainstream currency because of government policy and the huge technology needed to successfully cater for transactions that will be generated on the blockchain if billions of people are involved.

No.Despite that factor that 60% of people don't use computers,still bitcoin has succeeded and even it has created curiosity even among people of such groups who are computer illiterate.