who believe on cloudmining?

After so much scam attempts from ponzi cloudmining sites, I am not ready to trust any cloudmining site. no matter if they are running for how many years and paying users everyday. I believe all cloudmining sites will turn into scam one day for sure. because they don't min bitcoin or altcoin . they just pay old investors from new investors moeny.

how many of you still believe on cloudming sites and considering and thinking to invest there?