I'll take the bet. I pay you when it "never" does, and you pay me if it ever does. How does $1 and $100 sound?
Engineers are the worst.
The bet might work in your favor. Lots of candiate drugs are discarded for reasons like... having harmful side-effects, being found useless, etc.
Just because something is dismissed today as a promising candidate doesn't prove it'll never be used for something else in the far future. Many toxic drugs later found use in chemotherapy for cancer; it was suddenly good they were toxic