What boxing fight are you disappointed that never happened?

Of the ones I can remember... Bernard Hopkins V Wladimir Klitschko was talked about. Would have been a dire fight to watch as both were great boxers but with Hopkins noise, I think he could have won.

Also the prince Naz V Barrera rematch

Bernard Hopkins NEVER remotely thought about fighting with 6' 6" HEAVYWEIGHT Wladimir Klitschko! Hopkins never campaigned at Heavyweight!

when pussy ray leonard was so scared, looked across the ring and said he didnt feel it

For me, I think it would probably be Lennox Lewis v Riddick Bowe in the 90s. At one point in the early 90s they were clearly the 2 best heavyweights in the world SSOO should have met but never did. Due mainly it has to be said to Bowe avoiding Lewis, he famously threw away the WBC belt at a press conference when the WBC ordered him to fight Lewis. 

Mancini -Camacho and Leonard-Hagler both happened 5 years to late. Muhammad Ali-Eddie Machen Holmes-Coetzee 

Shane Mosley vs Zab judah back in 2008

I agree it was Pacman's fault the fight didn't happen when it should have, many blame Mayweather because they don't like him but the fact is Pacquaio didn't want to give random blood samples for some reason.....

Bowe vs Lewis for me, I could name loads but that one is my choice this time around. 

Chavez vs Duran at 135. It would have been fun that is all. 👊.

Muhammad Ali vs. Jack Johnson

Mike Tyson vs Donald Trump.