Altcoins are for the most part very profitable. Because if you are engaged in trading, then you can invest very profitably and it is very profitable to get money back. Therefore, I think that all this will be very profitable in any case.
Maybe some of them are not profitable coins but most of them are profitable,. Market is full of coins, as we can see there is bitcoin, ETH, ripple, and so many other altcoins, but I only prefer and I suggest all my friends to invest in bitcoin, for me bitcoin is the best coin and it has huge demand in market as well, so many people recently have become milliners because of holding bitcoin.