Creating an Iron Man suit with current technology is deemed unrealistic primarily due to the lack of a viable power source, specifically a compact arc reactor capable of generating sufficient energy. While components like hydraulics and mechanical parts could be developed, the challenges of fuel for jet propulsion and the need for protective shielding around a nuclear reactor remain significant obstacles. Discussions highlight that even if auxiliary systems could be constructed, the core technology for power generation does not exist today. Additionally, the compact design of the suit raises questions about heat dissipation and propellant storage, further complicating its feasibility. Overall, the consensus is that while some elements are possible, the complete Iron Man suit as depicted in media is not achievable with present-day advancements.