I regret... well...
Once upon a time, I traveled to the Florida keys to take some pictures of whatever we could.
Sunrise... and on Big Pine key there was an estuary. You'd think it was the west side of things, but since the road is heading west at that point, it was actually on the east side of things. Great sunup. Oh man, to die for, big round sun, and hoards of wading birds, and roosting birds. I was shooting a Nikon F2 with a 400/5.6, and my buddy was shooting a Bronica S2a with a 150 Nikkor on it.
I told him to wait... I was fiddling, trying to make sure the film was advancing... trying to set up a "Leitz Tiltall" tripod in the semi-mud that we crawled in on, so as not to disturb the birds. Almost ready...
That S2a went off like an explosion. Those Bronicas were focal plane cameras... loud as hell. No sneaking up on anything with those. He got the shot, I got skunked. Ended up begrudgingly taking a few sunrise pictures, and made sure he got to walk a lot in Key West, carrying that Godawful heavy Bronica, while I had a nice 24/2.8 on my F2.
Dunno if that counts as a missed shot, but... there ya go, from 1977.