Bitcoin is a coin that hardly needs any introduction. It is the first crypto ever to be created, as well as the largest coin in the current crypto market. Its' market cap exceeds half of the total crypto market's market cap, and it is the dominant coin, as it has always been in the past decade.
Bitcoin is the first crypto that any newcomer to the crypto industry explores, and while its technology is considered old and outdated — especially when compared to the newest projects — it is still highly respected for its value.
And, while we are on the topic of its value, it is highly volatile. In fact, Bitcoin is so dominant, so influential, that it commands the prices of the entire crypto market. Many like to claim that investing in altcoins makes no sense, as they move how Bitcoin dictates. Of course, this is only partially true, and coins are known to follow their own path. But it is undeniable that BTC holds major influence over them.