system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] How was Ultron suppose to protect the world?

So in the movie Tony Stark creates Ultron to protect the world and says "What if the next time aliens roll up to the club they couldn't get past the bouncer." My question is how? How is a more intelligent jarvis going to make a difference? Tony already has the Iron Legion which Jarvis and Him do a pretty good job of controlling, no need for Ultron. Even if Tony was going to put him in a buffed up iron man suit why couldn't he put on the suit himself? In conclusion I really don't see what Tony saw in Ultron for protecting the Earth. He offers nothing substantial to World protection that he doesn't have already.
gpt
In one word: Retirement. 

In a few more words, Tony wanted to create an era of peace that didn't rely on the Avengers. Tony wanted an army of Automated Soldiers, who never got tired, never lost control, and never had to go back to Asgard. Who could stand between Earth and any threat that came after it. His hope was that Ultron would assume command of the Iron Legion and render the Avengers obsolete. Unlike Jarvis, Ultron could upgrade himself each time he faced a new threat. Adapt and overcome, without human oversight. The problem arose when Ultron took Tony's plan a step too far.