Touché but since you're a minority, a pool would solve this question for us
Odds are equal for bad weather or 4/1 for good weather or 4/1 for very bad weather in Frankfurt
Why this city ? (serious question here)
it will be difficult to find a place that everyone loves/agrees with. the special part will be the event itself, the city is not that important except for central air/road/train hub.
-central airport, cheap worldwide direct connections, no hassle with changing planes
-equidistant to americas and asia
-easy/fast to reach city from airport
-lot´s of banking highrises (the idea was to make it a rooftop party in banking highrise)
-ecb headquarter
-germany first country to legally acknowledge btc, german government btc-friendly (e.g.no capital gains tax)
-sufficent infrastructure for events (catering, security, hotels, etc)
-since it is an one-night indoor event, the choice of city is important but not
that important. frankfurt is topranking in all kinds of city-rankings anyway.
-promoters/organizers of party live in frankfurt, easy to organize, no fuck-up to expect