Since around 2018. I knew about Bitcoin at first before understanding altcoins. However, at that time, BTC faced a very bearish market that made many people feel fear and also disappointed of this crypto. However, although it faced some loss, I was sure that BTC can reach its more valuable market again. And now, BTC has shown that power. I hold it since some years ago and it is very pleased to have them although it is still a small amount.