what was your saddest moment in ksp

[Sweetnsaltyish]

I'm asking for things that could have been good, but ended up horribly wrong

 

once, I had a duna science lander, and all of the experiments needed a scientist to reset them, but I accidentally brought Jeb instead, 

 

and to top it off, I put the ladder upside down. . .  

[razark]

When they released a new version but the shutdown ended the same day, so I had to go back to work.

[Geonovast]

When I wait the 5 minutes for the game to load, then as soon as I get into the VAB I realize I don't really wanna play it.

Been happening a lot lately.

[GRS]

Realized my Pentium can't let me go 100% in Large CRAFTs

[lllmaxlvllll]

Smacking into Kerbal , which killed Jeb  , because I didn't get out of time warp quick enough.