Accept the fact that altcoins are more of pump and dump and is producing profit for the day traders. I don't care if he's a pioneer in blockchain on Wall St.
Some will have an uplift eyebrows for just investing in bitcoin, you have your own strategy and the guy isn't forcing you to invest to bitcoin only. But as a long term holder bitcoin has been always reliable in terms of profit and growth for years.
Nowadays more coin release in the market place. So choose the best coin. Then invest. Bitcoin is king of all coin. So it any time to down and increase the price. So check the market price then get the all coin price information. then invest. It change the most of the people life. It time to acct. So time to sell and buy the coin. It any time to increase the price. If price will be increase then sell on time. It good future growth. Now most of the people wait for the price down. This right time to buy and hold the coin. Market place is help to gather more information of the all coin price list. So easy to choose the best coin and invest. It change the people life style. If price will be low buy and price will be increase sell on time. If buy the coin follow the market price then sell. Market place is help to get the coin price information for buy and sell.