Bullshit weather robbed me of 2. First was an Endeavour launch back in the 90s that was postponed due to possible rain, and the 2nd back in 03 was a thunderstorm.
The first one especially pissed me off because there was 0 reason to call it.
Fun fact for you, regarding weather postponements...they launched apollo 12 in the middle of a goddamn thunderstorm and it got struck by lightning twice...no problems. They won't launch a shuttle because the damn thing might destroy itself under perfect conditions.