Do you really think that fees are low? Bitcoin is quite slow technology with big fees (if compare to other cryptocurrencies). It's not technology of future. Its past.

Bitcoin isn't special at all. It's just a pioneer. But now it's a technology of yesterday. And it will never be the cryptocurrency #1

Ethereum is the future. Bitcoin has too old technology. 7 operations per second is not that speed that main cryptocurrency of the world should have. It's a really good brand. But ethereum beside brand is a great technology

What I see for now - active dev teem and nice community. But I still cannot understand, what is this coin for? And what is the difference from other coins which were created to pay for games?

If you mean that bitcoin can bit USD in it's international money leadership - you're wrong. All thing is in trust. People believe that usd is as strong as USA is strong in world politics and economics. Maybe bitcoin will take 1st place after huge geopolitic changes.

The same history says that it there will be big jump in May.

Ripple is not so powerful brand like  bitcoin, so there is no reason for it to be so expensive. I think there will be market correction during 1-2 week and the price will stay near $1 (but it's still to high for ripple)

coinburn is a good way reanimate coin. hope, they'll really do it

I can't said that cloud mining is only negative. Yes it's really a problem, that services (at least hashflare) don't let you to make windrawals to exchanges when price of Bitcoin is growing up. It can be interesting experience but you'll never been sure that you cloud mining contract will finish in a "peaceful" way))

It reallly depends from project. Until there is a place where you can use this cryptocurrency - it will never die. Some of existing currencies don't have these plases, so it depends on time how long their life will be .

To change bitcoin to USD you should show your face, so its not so anonymous, as we usually think. And you can see the chain how money are moving throught the wallet.

http://www.telegraph.co.uk/technology/2017/12/18/eu-considers-launching-database-bitcoin-owners-crack-criminals/

Is it the reason, why bitcoin price goes down? Or does it mean the end of one of main bitcoin's principles - anonymity?

The best way for you is to invest just a little, to understand how it works. And only then make desicion - make big investment or not.
Look at the altcoins - investment in them has higher risks, but you can get bigger profit, comparing to bitcoin, which is more stable.

Now it's a good time for developers to say community their plan. What they are going to do to "make go coin great again"? What are their next steps to make coin more popular and useful? Or project is already finished?
Without answers on these questions, go coin has no future.

How is leader in this sphere for you? In whose opinion you trust?Is it some youtuber, journalist, economist or a member of bitcointalk society?

Everything is in trust. People trust in USD because of it's history. And don't trust in Bitcoin because most of them don't understand what king of money is it, as it's new technology))

There is only one good thing from these lesson - another pools like Nicehash will improve their security.

Good news. Global money start their evolution to cryptomoney. Story about Venezuela's Peter is a good chance to see how it works. I mean, to see how govermental centralized cryptocurrencies work.

It think the ICO period is just beginning. The highest peak will be in autumn 2018, i think.

It can be controlled by some regulator (smth like part of World Bank). These regulator can control the currency rates, that will make it more stable.