Yes people are facing psychological problem because of the decline in market, and it's also true that it's only for a short duration of time, the market will gonna be normal again. 

Yes it is right you should hold your coins as much as you don't need or you don't have the capability to hold it on further, always sell your coins when the market is good. And dont panic

It's not like never doubt but you should know in which thing and at what time you are investing your money in Bitcoin,
 that's the most important thing.

It's good to hear that Samsung has entered in the world of crypto currency. This will gonna influence many more big companies to invest in BTC.  . And this will remove questions from people's minds about investing in Bitcoins.

I don't think so that in future there will be a shortage of buying BTC because its not a local currency its a online transaction scheme. So its not possible until any limitations will be implement on buying BTC

Yes we can use it as practical currency nowadays because it has been known by many people and it has a power to be use as a practical currency. It this further people around the world will gonna use it as their practical currency.

It's not like winning or losing although both have their separate propaganda and proposal of well being so it may not win with decentralized coin because not many people have been forget about it.

Virtual money or BTC is beneficial but people don't know about it. Around 2022 people will know.

Now a days people know about Bitcoin or crypto currency but they dont know about how it's beneficial to them and how they do cashless transaction. So we should advertise about it and aware people that how it works and how beneficial is this for them

It's because of the trust issues recently people are facing, its one of the reason is Pyramid Scam which is not true but it made people in discussion and disturbed on the side of bitcoin.