For investment it would be wiser to invest in bitcoin because it is more stable and the increase can be very high. Reputable altcoins are also good for investment but are more efficient when used for trading than investing in altcoins.
Bitcoin will fall by 2 times and will stand still as a new global asset. It will never grow a thousand times. It was recently compared to gold. ..There's not much gold either. And it is also not infinite.