Comment by kolev

Cask could be awesome, but it's not at this stage. There are no upgrades, in many cases it doesn't work. Most apps complain that they are not in /Applications, but are in ~/Applications instead and so on. At the end of the day, it duplicates some of the Homebrew functionality - some non-GUI packages are getting into Cask, because possibly Homebrew doesn't want them - it's a bit confusing as well. I think efforts should be put into merging into Homebrew instead of keeping it separate.