If you want to take the risk and install some unsigned software on your machine, go ahead, but don't blame Apple, who is gatekeeping for the entire ecosystem for making the decision to keep the restrictions in place so that the other 2.5 billion users don't fall victims to malware defenselessly. Also, as a rule of thumb in cybersecurity, never underestimate human flaws or overestimate your ability to overcome them. Even the most brilliant experts cannot possibly know everything and make zero mistakes, let alone "the users" you are talking about. It is pure illusion that "the users" know exactly what's running on their machine under the hood. We should be thankful that Apple is willing to hold the lines and go this far to tighten security up when nobody forces them to. It is probably one of the best thing coming out of Jobs' relentless push for privacy and security on the iPhone.