Because none can guarantee that new projects will really pay you, will survive during the bearish era, will be legit projects not as a scam, and new projects are high risks in all aspects. If you don't mind the high risk, so just go on. But, if you lost your money because of new projects, never blame crypto space. Everything needs analysis, moreover a new project. We don't know whether they will enter the top ranks or not moreover when they are not listed yet in top exchanges moreover having a low market cap. We are here investing for a certain period, short term and long term, and most will take fewer risks in order to prepare for even long term period. A new project may not be able to survive during this bear market. Although top coins also don't guarantee that they will be sucesful, atelast they are tradable in top exchanges and have high marekt caps, and pssibility of being dead coins may beless than the new projects