If you install form source, you lose all the advantages of a package manager (updating, clean uninstallation, dependency management, etc).
pacman (and makepkg) make creating your own package stupidly simple. (not to mention that the official repos + AUR have an immense amount of packages present already).
pacman (and makepkg) make creating your own package stupidly simple. (not to mention that the official repos + AUR have an immense amount of packages present already).