Why do I need to run Sublime Text 2 with sudo?

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http://askubuntu.com – I installed Sublime Text 2 on Ubuntu 12.04 as per this tutorial. http://www.technoreply.com/how-to-install-sublime-text-2-on-ubuntu-12-04... However I don't have adequate permissions when launching the program from the Ubuntu launcher. For example I cannot install packages, or if I add a folder to the sidebar when I close Sublime and reopen the folder is no longer listed. If I run sudo sublime in the terminal all changes remain after closing. I've tried chown-ing the Sublime Text 2 folder in usr/lib sudo chown -R mylogin:mylogin /usr/lib/"Sublime Text 2" but this seemed to have no effect (HowTos)