I think it will overcome PayPal in fast transactions and of course the number of funds Bitcoin has more Dollar reserves than PayPal. But this is the only thing that bitcoin will be hard to overcome on PayPal, the security of every members from fraud. Unless you are using online wallets, in our country you can never use their service unless you'd undergo in their KYC verification. So you can open a dispute if the scammer is using the same online wallet.

I think 100 time is so long, I'm 100% sure that 100 years away all the members here are dead. this makes me not convinced that bitcoin can last up to 100 years because the development of information and technology very rapidly.

Bitcoin is private, secure, transparent, tamper-proof, easy for international transfers. All these are much better than fiat. Of course I don't think bitcoin will replace fiat due to its limited quantity.

ASIC and GPU have different purpose when it comes to mining, if you have both that is better.

Why does it sound like increase on the price negative to you. Isn't it good that the price is going high it's having its value increased.