Sadness for the Japanese people to have had this moment cruelly taken away from them. I know how I felt about our Olympics, especially having been fortunate enough to take my kids up to see it.
Worse still, I can imagine that in the end many in Tokyo would rather have not had it at all, given the circumstances. A difficult call all round.
For this reason alone, I really really hope that Tokyo is allowed to host it as soon as they are next able to have it (assuming they want it). It would be lovely to see them host it in 2036 (Brisbane has recently been awarded 2032).