Investing in BTC now ahead of the bull run is really a good initiative, also don’t fail to understand that there are some Altcoins that follows BTC trend. For example altcoins which are for exchanges just like BGB, BNB and the likes will give you a good amount of profit doing the bull market.
Sometimes history don't repeat itself because previously people got benefit from dogecoin when it pumped but now the price is still lower and there is no information then when will it come higher again. Bitcoin always proves to be beneficial coins as compared to altcoins so without investigation one can believe that bitcoin will make their wishes true but if we leave bitcoin and put our trust on altcoins then it is possible that we will face huge losses in future.
From utility of a token one can decide about the importance of coins also check the market cap so you will easily find about good altcoins. In Altcoins if someone buy now ethereum then positive effects of halving can also be a reason for boosting value of ethereum and other important alt coins.