What part of physics is it that states this and how do you explain that 'room temperature' just happens to be the range that is related to us and our environment and not to anything particular in physics? Or is it that you suspect that there is an exclusive or relationship between the conditions that allow complex biological life to never have overlap with those that allow superconductivity?
There are a lot of existence proofs that something invariably does happen, just not always the thing that you were hoping for. And even those tend to work out in the long run. Remember the quest for the Laser.
Well, except for the whole "research over the last decade or two has born superconductors that work at warmer and warmer temperatures" thing.
Superconductors look far more promising than the economics of nuclear power (which have gotten worse, not better) or fusion (still perpetually 20+ years out), and it's a critical field to work on because we desperately need stuff that superconducts at LN2 (or warmer) temperatures for things like medical imaging, because we're going to run out of helium completely in 100-200 years (and it will become wildly uneconomical well before then.)