Today... I have finally grasped the "Loosing Is Fun" thing.
Surely this fort was promising enough already with that burning miner who refused to die until reload. And that artifact yak leather face veil, The Virginity of Sloths. Well, we had so much gold here we could have been wiping our butts with golden wafers, and looks like that vast meeting square paved with gold (that took about a solid quarter of the accessible surface) was the last drop for those sissy local goblins to finally pull the thumbs out of their arses and send a decent siege, took you long enough. Oh, good, ogres, haven't seen them in a while!
A dozern of riders died to my archers before return fire forced them our of the tower. And then I suddenly feel smoke in the air... Magma? What is it doing on the surface? Ooh, I see, totally forgot about that unfinished miniproject of a magma-based defence system. That has been holding on to a single floodgate this whole time. Until said ogres broke it out of curiosity. Well, no big deal, the bridge is up, the moat is isolated with an obsidian door, the stocks are brimming full with stuff, everything is fine... Wait, who the hell left the moat door wide open?! Dorfs, change of plan!
The invaders, all hundred of them, pour into the trapped hallway and get minced to pieces in an act of bloody carnage involving hundreds of glass serrated discs and menacing copper spikes. Exactly after the last two survivors escape the scorched landscape, a Desert Titan comes in. The giant stupid bird just caught a few dozerns of metal bolts before collapsing right atop the watchtower. Then the drawbridge started flooding, raise it the hell up. Good, now I need to think up a way to contain the magma before it floods the mining facilities. A cave-in, great idea! My bonesetter miner channels the last tile while standing on top of it and goes down for a swim with an alert. But, there were two things I haven't taken into account. First, the cave-in was too narrow to plug the channel. And second, a cave-in only stops on a completely solid surface. One level below was the farming sector. No big deal, put a door here, and we'll be fine. What's that tile, is it a hole? Why do I smell smoke again? Two levels below was the booze stockpile. And the dining hall. A bunch of unlucky beards got fried on a spot, half of the others started tantruming right there. Fine, now I can finally contain the magma with doors. And THEN I recall installing WOODEN doors throughout the whole living area for vengeance purposes.
This was the most glorious failure of a fort I've ever had.