Any logical explanation as to why the couple last uptrends was only on Bitcoin, as much as I am happy with this uptrend but I can't help but to get scared because with Altcoins not rising even close to Bitcoin level of rising when a correction happens Altcoins will dip badly
when the price of bitcoin begins to rise a lot, people rush to sell their altcoins to buy bitcoin, and this cycle can last a long time making the altcoins fall a lot and for a long time. just see the price that the altcoins had to 5 months and the price have today to realize what I'm talking about
we reach more than $5750 and we are very close to $6000.
In my opinion it's not about bitcoin price grow. It's about volatility of bitcoin because when bitcoin price dump that makes altcoins dump even further what should not happened based on your explanation.
High volatility on bitcoin makes almost impossible to predict alt/btc and alt/usd price since those are related to btc/usd price. So when volatility on btc/usd increase makes short term alt traders go on holiday or trade on BTC/usd since there are finally good conditions for speculation. Their capital moved out of altcoins dump them and makes other (even middle term hodlers) sell what push price even further.
When volatility on bitcoin is decreasing short term traders leave btc/usd pair (bad speculation condition) to trade on altcoins what push price up.