In vain I bought it for $ 500, now I do not know what to do with it
imho, cut your losses and sell it but keep an eye on the chart, in case it goes into a pump. You could buy quick and sell higher to make less loss if you have that kind of time.
Keep only what you can afford to lose. I bought enough at $500, and will hold as a hedge against a bad event in BTC. If cash fails, then so be it.
I did the same with ETC, knowing that ETC would most likely fail, but on the basis that a division of investment between ETH and ETC would give a spread of risk.
That makes sense.
It is always about the developers first, and the community. The chains with the greatest agregation of development talent will have the best and most relevant tools and software. Community and distribution are important, but they tend to grow from the development ecosystem.
The effective airdrop in ETC and in BCash provided a starting distribution, but it was only a snapshot, and will likely be siphoned away slowly by the gravity of the system with the greater mass.
The conclusion so far is that Core is the winner. Relative price movement will confirm that, as it is doing right now.
It's not 2014 anymore. The remaining Kore devs are just killing BTC by building a bunch of shit on top of it. There are many people coding new coins that are technically more sophisticated than BTC. At this point you could say there are too many cooks spoiling the soup. We likely need LESS development and more adoption. Bitcoin is no longer just for geeks, there are tons of finance people involved, as well as a healthy assortment of idiots trying to get rich quickly.
The concept of "community" has been thoroughly debunked. At this point /r/bitcoin is a heavily censored joke, it's not even funny anymore. Blockstream has been caught buying tweets and stuffing the ballot boxes on voting sites. They're desperately invoking government authority (SEC/computer fraud laws) to keep their stranglehold on BTC. The 2x fork is the only way Segwit even rolled out, now they shoot themselves in the foot and cling to their Lightning Network fairy tale...
The credible theory I've heard about the BTC pump is that people are stocking up on BTC before the forks, so they can get more free fork-coins and maybe do some replay attacks...
If the 
weeeee