I am new here, and i want to hear your opinion, ideas and advice. Thanks
Depends on what you want the currency for. You have to know that apart from playing in a casino that is a zero-sum game based upon "greater fool theory", crypto currencies are not so much used.
What people around here call "crypto investors" are nothing else but scammers that try to find other would-be scammers that they can rip off. This is why they look for "crypto currency adoption", because that is, to them, an influx of more sheeple to scam, that is, to sell them crypto tokens at a higher price than they bought it themselves.
For instance, someone who spend $10 on the possession of 100 bitcoin in 2011 or so, and sells it to a newcomer who will pay him 60 000 $ for those same 100 coins, has been playing "greater fool theory" with success and scammed the newcomer. That newcomer will not complain, because that newcomer is hoping to re-sell these same 100 coins in a few years for, say $200 000, to a still greater fool. The last layer of fools will have coughed up the whole benefit of his predecessors: that's grossly what "market cap" measures. At this moment, for bitcoin, it is around $ 10 billion, which means that the current bitcoin buyers grossly have coughed up $ 10 billion to make early adopters rich (this is not true, market cap overestimates that amount, because of dormant accounts and the lack of circulation of bitcoin).
So if tomorrow, bitcoin collapsed, the last row of bitcoin holders are the guys and girls who where the victims of all those making profit on "bitcoin investing".
Altcoins are the same.
This is the biggest usage of bitcoin and altcoins: gambling in greater fool theory. Most of this doesn't happen on the block chain, but on the web sites of exchanges, and the block chain doesn't even have to exist in a certain way, to play this game. It is sufficient to have virtual tokens on exchanges, and gamble with them between peer gamblers (sorry, investors).
But there are other usages. They are very minor.
The most important secondary usage, is as a currency. To buy stuff over the internet with, on official sites, or on dark markets. This was the original purpose of bitcoin, but I think it is only a minor part of the transactions.
Another usage is smart contracts. Ethereum is the best known coin here. But there also, the use of ethereum for smart contracts is essentially negligible as compared to the gambling of ethereum tokens in exchange-casinos.
Several other coins exist. Monero is a currency, similar to bitcoin, but making the successive transactions cryptographically difficult to track. Steem is a currency with which you can vote on blog articles. Litecoin has about the same currency function as bitcoin.
But most coins are not used much, apart from betting tokens in the greater fool casino game.
So to answer your question, one should know what you want to do with it. Buy stuff on the internet ? Make deals with other people ? Hide your expenses ?