It mostly because of i choose the wrong project that was a scam project. or a project that the coins has no value when it hit to market.
But i can't regret to much cause live must go on, so we must looking for any new one and the trusted one.
yes, often I find the project that you mean and is very regrettable when the team and project have a vision and mission that can be said to be good but when on the way the project stops because of a fraud team, and even worse when it enters the market but the token has no sale value.