The Meaning of Life, the Universe, and Everything.
Mine was actually when I was playing on the Wynncraft server and I was down to my last few soul points(nether stars) lagged while I was in the middle of a ton of mobs they killed me I lost the rest of my soul points and lost all of my best gear and spent a week getting all of my stuff back to make my character playable again.... Still kinda peeved about it haha
I can understand that one when your a newb and just trying to figure out the game and you are randomly hitting buttons. Its like accidentally hitting F5 I did that and I was so frustrated I actually walked away from the computer haha
I think it would be when this one guy that teamed up with me on a PvP server (already found it kind of iffy) killed me with somewhat of a warning. I was playing PvP and I made this 100% concealed mine (unless you use X-Ray) to a base that I raided. I was surviving for days. One night a guy says "Hey, Blue, wanna join our team?" I wasn't sure since I wanted to be by myself, but I accepted his invitation. I show him my base and then he says "Sorry, I have to do this" And before I can even type "Do what?" he starts slashing me with an OP sword. When I died he said "Do [some team command] to get your stuff back" So I do that command and it says "You are not in a team!" So I tell him "So you took me out?" And he said "Yeah, I did, come back when you're stronger" Hm, okay, I guess the point of PvP is to team up with people and kill them once you meet with an OP sword.
Pretty much any time I've spent a lot of time and materials building something in Survival mode only to end up hating it.
And any time I've ignored the warning to NEVER mine directly down and ended up swimming in lava. Usually happens when I'm in a low level and am all excited because I found a good ore vein and am just happily mining away, and oh, better get this one *right under my feet* too!!
I don't really get upset when I die...9 times out of 10 when I die I'm lost so I'm happy to be back at my spawn. A few diamonds are worth it.
I was pretty mad when my brother died in the Nether with a level 30 enchanted sword and bow, along with some other diamond gear. I wasn't mad about the stuff, it's just that when he dies he loses all interest and wants to quit. I also needed his levels to enchant another bow.
I was in the neather on my friend's server when he switched it from peaceful to normal without telling me. I'm to much of a cowardly noob to play non-peaceful survival, let alone in the neather when I was building him a neather base.
I raided a nether fortress on a server. I came back out with two sets of diamond horse armor, a couple sets of gold horse armor, and more than enough blaze rods to begin my potion operation. As I was travelling in search of my portal home, I decided to dam of a lava flow that was in my way. While building the dam, the flow updated and surround me completely. I died and lost everything.
i was taking em to my new house ... then the creeper came
Gah! What a shame. I WISH I had 5 stacks of diamonds in my survival days. The max I reached was around a stack and a half, after mining for SO long. Of course the fact I stopped playing survival before enchants were a thing didn't help.
Little back story first. I am a noob. I have only been actively playing since December but have been big in MC for a long while now watching Let's Pay after lets play and sitting around watching friends play it on Xbox or PC. So when I got into it was very very excited.
Saying that, the angriest I have ever been was just after my biggest achievement. Getting fully enchanted armor with a really awesome enchanted diamond sword to finish out the set. Well I was so excited about my accomplishment that I started my 1000 block run to my nearest neighbor and IRL friend to show her my set. Well along the run, there was a surprise. I came to the top of a mountain and looked out to see water. So I started my run down to find hidden at the bottom was a blind pit... and a very long fall into lava. It all went up in flames and my weeks of mining and XP grinding had all been for not not an hour after such a noob accomplishment. I am still upset about that to this day, but the pain gets a little duller every day.