What do Prime trust do that you can't do as an individual?
You chose crypto because there is an option to have full control of your funds, why then would you then go ahead and put trust in a custodial service with your crypto?
While it is important to have control over your own crypto assets, for all regulations and requirements any crypto businesses are facing, businesswise, there are situations in which it may be beneficial to use a trusted third-party service to provide added security, convenience and peace of mind.