For new investors, it is indeed profitable because they can buy good coins at low prices, but for old investors, they suffer a substantial loss. The advantage of a declining market for old investors is that they can accumulate coins or tokens, so the average price of their investment is low
I agree with you, like me who has been holding altcoin since 2017, hoping that if 2020 bullrun happens so I can sell all my altcoins and start investing in bitcoin even though I think it's a little late.
People have faith in altcoins, that's why they are holding and waiting for the outcomes to recover prices. As of now, the market situation is unpredictable, but people have kept huge faith in chains which they are held. 2020 is a very good year because we might see much good news from the companies and countries about the block chain.