Why haven't we developed forcefields/shields yet?Watch
But as a sci fi fan I shall continue to hope haha
There is some work being done on this. I have read some articles about the army using capacitors to dump a load of energy into the armor of armored vehicles and tanks to generated a electro magnetic shield. That sheild would then cause bullets and rpgs to tumble before impact thus reducing the impact damage (as the rounds would have less penetrative power on a side collision than tip)
Ah i do wish this was a thing. The theory makes sense though it just isn't practical. Similar to railguns. the idea works but the energy needed to power one is way too impractical.
EDIT: Though I rather shielding as a concept than railguns. Shields could be very handy in general use such as reduce car collisions and even on planes. Depending on how they work it could maybe increase aerodynamics allowing faster safer flight. But these are just the dreams of a semi drunk sci-fi nerd haha