Currently on the coinmarketcap site only about 1590 projects compared to at times more than 1700 projects. They have left many projects without developers or scam projects. I personally invested in some of these projects and lost a lot of money like bitconect and centra. Do you trust the projects you are investing in and will keep them for a long time until they succeed or are they just looking for profit in the short term?
Trust the projects of course good, but we need to check them out. I think many faced with the fact that invested in a project that is not so thoroughly studied before entering, and then lost everything because of the fact that the project died. But a good analysis is not always the key to success, sometimes the project seems good, and then it turns out not to be as it seemed before.