Key of Digital age or Bubble age?

Age of digital era is hard to identify. Barter system is the beginning of economy era which is modernize name now a days.
Economy will be described as a digital era soon. Developed countries always far away in term of technology but now a days under developing countries are facing huge problems in the advancement of technology but these tiny issue aren't able to stop them for progressing. Recently we all heard about the cryptocurrency when there is a rumor of a BITCOIN boost same time many more currency came in the field of cryptocurrency and want to cash the reputation of BITCOIN. there are more than 150 currencies in the market. But what is value of these currencies actually there are following points
1:- Poor people can buy these cryptocurrency?
2:- Cryptocurrency is useable on every brand's outlet?
3:- What if they loss there hard drives where they also lost every single penny?
4:- Is Cryptocurrency is key of going to the next level of DIGITAL ERA?
5:- Everyone who is working on new cryptocurrency wish to create impact on the development?
6:- There are a lot of other questions rise when everyone wish to buy bitcoin
7:- Recently we all saw the boost of BITCOIN but on the other hand we are seeing the crash of BITCOIN.
Most Important question
8:- Is it Digital era or Bubble Era?
kindly share your thought in comments.