1. It's a legend!
2. Everybody know it
3. You can exchange it to any other money
4. Biggest cap, fastest growth (despite of all disadvantages!!)
Literally, that's all.
BTC is no more cheap, anonymous & fast - but anyway we love it!!
"2. Everybody know it" is wrong. In my family, 80% members do not know Bitcoin. They just heard the digital money and cryptocurrency, or virtual currency. Almost the knowledge about cryptocurrency and Bitcoin of them are wrong and misunderstood about it.