Both Bitcoin and other altcoins are almost equal when it comes to trading because all other cryptos including Bitcoin fluctuate in price and no one can guarantee or accurately predict when the price of any coin will rise or when the price of Bitcoin will rise. So all coins including Bitcoin are risky when it comes to trading. But if you are thinking of holding then Bitcoin is definitely better because long term investment is more likely to profit from Bitcoin and it is more guaranteed. I am not giving financial advice to anyone. I only mean that Bitcoin has made history so far
Yes Bitcoin will make history in future as it is making history now. But I couldn't agree with you because you said investing or trading in Bitcoin has the same risk as other coins or alt coins. Investing in Bitcoin is more convenient and less rational than other coins because the price of Bitcoin does not fall like other coins rise and fall suddenly.
When the price of Bitcoin falls, it recovers quickly, for which no one is harmed but many gain. Experienced traders or investors will never compare Bitcoin investing or trading with alt coins because they know that trading or investing in Bitcoin is much less risky than other coins.