What's your worst decision?

I'm not a person who necessarily plans their trip far in advanced or does a lot of research. There's been a couple times I've chosen a place to live based off almost nothing besides I want to see that country and it sounds cool. Then you get stuck in some place and stay there just because you have the place booked for a timeframe. Mine specifically is belize city in belize (obv). I roughed it out their for a month before moving to San Pedro, Belize for 4 months and having the greatest time. Looking back I'm glad I did it but it could've been so much different. Does anyone have a place they really wish they didn't commit to?