It definitely teaches you a lot, even if you don't go and start tweaking source code.
Also OpenSUSE tumbleweed and some other distros have btrfs with built in snapshotting. So if you wreck your install, you just reboot and choose an older (working) snapshot. Them set that as your default to boot from. No downtime from mistakes is nice.

Typical windows troll, doesn't like the truth.