This flick wasn't realistic? The entire 3rd act (Skyfall to the conclusion) had me feeling this wasn't a Bond flick because of the realism. No larger than life set pieces, no goons being gunned down by an invincible Bond, no damsel in distress and nothing major at stake here. All you got was Bond defending his 'family' utilizing very rudimentary methods from an insane version of himself also desperately clinging to his 'family' or lack thereof. The most unrealistic thing we got was a helicopter. A helicopter and some grenades.
Silva is even cast in a sympathetic light as a tool of M gone horribly wrong right up to the symbolic way he dies via being stabbed in the back. The advance of technology questions the relevance of MI6 and 007 as a field agent. Bond failing his physical exam and seeming 'off' from the start (getting shot) put this movie in a whole different place. This wasn't Brosnan/Moore style 'just another day for Bond', it was some humanity that was frankly jarring to me as a fan. Where was the camp? This movie felt more like a thriller with 007 in the mix.
The reason I rate Casino Royale as better than Skyfall is precisely because Casino got the mix of Bond elements (realistic and unrealistic) better than Skyfall which went down the road of trying to flesh out M and Bond's relationship and Bond's relationship to the world to the point of diminishing some of the redeeming qualities like those larger than life adversaries, the plot invincibility and the suave that has made Bond such an enduring literary and cinematic presence all these years. Other movies have done smaller scale enemies (most notably Daltons two) but this movie isn't even about an organization, it's one man and his grudge against M.
This may have been the first movie where I felt bad the villain got killed by Bond. Compare that to Kananga getting blown up in LALD, Goldfinger getting sucked out of a plane, Grant getting strangled by Bond, Sanchez getting lit up or even Le Chifre getting executed by Quantum. All of those guys deserved their fates and the audience knows it but Silva? You're left questioning M and organizations like MI6 just like Goldeneye where you questioned where 006 went wrong. Except Silva is clearly off the rails and mentally scarred.
It was a great movie but as said previously this movie has you thinking more about the real world than enjoying the escape Bond movies have typically been.