Because loading gems can take longer than you think
Now available as a gem - get it here
[to Mac users]
[probably linux users too, I'm not sure]
To somewhat secure yourself from people like @avsej and their stupid jokes, create a file ".AAA" in your home directory and change file owner to root. Something like "touch ~/.AAA && chmod 400 ~/.AAA && sudo chown root ~/.AAA". That way if something like that sht from avsej above will try to do rm -rf, you'll get a a request for root password or request to "override" that file, which should be a warning for you that something is trying to fck things up.