While I totally agree that managing hardware at home can be cumbersome, if you need large and slow amounts of storage - e.g. for torrenting o plex - VPS are too expensive. With a ~250 € investment I could get a server with 2TB HD that consumes 50W at max while the same VPS would cost me twice - if not more - for 12 months.
+1 Dokuwiki. It is a little complicated than most to configure the first time, but once you have everything running, it will work without complaints. Also, the whole wiki is stored as plain text files, which is awesome for backups.