ZFS is widely used by many users and organizations. Just because it is not currently included in the Linux kernel does not mean that it is useless. There is ongoing work to integrate ZFS into the Linux kernel, and in the meantime, many users continue to find value in using ZFS on their systems. As an alternative, you could try using FreeBSD, which includes ZFS as part of the kernel. This can make it easier to take advantage of the features and benefits of ZFS without having to install and configure it separately. Additionally, because ZFS is integrated into the kernel, it can take advantage of FreeBSD's advanced security and performance features.