Before you know it, you start building your first dedicated NAS with a fancy file system that few people use (ZFS), configured with data striping and a distributed parity bit in RAIDZ (RAIDZ1), with UPS systems for high power availability. You'll become the go-to expert on hard drives among your friend group, and find yourself correctly answering questions like "What's the difference between CMR and SMR?". Backblaze's quarterly drive stats reports will start to become something you look forward to the release of, like a new episode coming out on your favorite TV show. You'll get acquainted with Kodi, Plex, Emby, Jellyfin, and more. You'll figure out the allure of mpv over VLC. You'll become the guy who reminds people that the cheapest hard drives are often the most expensive. You'll learn what private bittorrent trackers are, and pine after membership in the most exclusive ones. You will become intimately familiar with commercial VPNs, SSH, VPS offerings, and more.
Be cautious, friend - once you decide to start taking this hobby seriously, you will dicover this is no mere hobby, but a lifestyle.