BTC is the safest crypto and the only one with millions of people dollar cost averaging into it. Nobody DCAs into Doge. Doge was completely dead before Elon Musk started talking about it earlier this year and likely will fizzle out as the fad dies out.
Many altcoins die out while BTC tends to last throughout cycles. Moreover, it is the market leader and guides the direction of the entire market.
You won't recognize any of this. Feathercoin used to be top 10, now dead:
Go back in time. View a historical snapshot of all active cryptocurrencies on 25 August 2013.
coinmarketcap.com
Go back in time. View a historical snapshot of all active cryptocurrencies on 24 August 2014.
coinmarketcap.com
Go back in time. View a historical snapshot of all active cryptocurrencies on 23 August 2015.
coinmarketcap.com
Also read this: