Originally Posted by Visualiza
I think the conclusion of the final battle refutes this idea. JARVIS attempted to kill Pepper and Tony was powerless to stop it because he lost the headset. An event like that would surely say to him that he needs to be in complete control of a singular armor. Destroying the remaining armors and affirming that he is Iron Man solidifies that.
Exactly. Tony's been shocked already at what his creations are capable of to the point where he turned them into a firework show at the end of IM3.
He clearly feels that they are no longer need, and that they aren't the solution to whatever threats await the world in the future. So there really is no logical reason for him to mess around with an even more advanced AI.
If Tony's involved with Ultron, it'll be indirectly i.e. someone has taken his technology.