As I have touched on in a previous post there are several known risks with Bitcoin Legacy aka Bitcoin Core right now. You can read my previous post here: https://www.jaredschlar.com/2017/11/now-that-bitcoin-segwit2x-fork-passed.html Bitcoin Legacy has some problems: Bitcoin Legacy - Chain Death Spiral. If you want to read more about this potential problem from an expert visit - https://bitcoinandtheblockchain.blogspot.com/2017/08/chain-death-spiral-fatal-bitcoin.html Bitcoin Legacy - Severe network congestion. There are about 58MB in the pool right now for Bitcoin Legacy vs Bitcoin Cash which is .1MB. Bitcoin Legacy - Civil War with BCH and other contentious groups. There may be another fork coming in January. We shall see. This brings up a good point which is unless you are 100% confident in holding one coin, it’s best to diversify into multiple coins.