How do you know that the price won't be on the bigger dip tomorrow? Altcoins wise, we are still in a heavy downtrend. All major altcoins such as ETH, LTC, ZEC, whatevs, are losing to BTC big time and there is no end to this. Bitcoin goes down and altcoins go down even faster. Then bitcoin rebouns but altcoins don't quite follow the lead. So with every cycle altcoins fall deeper and deeper in both fiat and bitcoin terms.

For the majority of people involved in crypto there is no real difference between cryptocurrencies. Then why risk your money with altcoins when there is a trusted and time-tested bitcoin?