In my 9th or so fortress, I decided that I was going to apply everything that I learned from the past ones to avert tantrum spirals, HFS, titans, sieges, etc, etc, so on and so forth.
Thusly I named it "PerfectFort".
Every dwarf owns a 5x5 bedroom that contains a bed, cabinet, table, chair and two chests. I waited untill I had a legendary worker in masony and carpentry before I built this massive ammount of furniture. So its all masterwork, sometimes encrusted with gems I happen to find lying around.
Dwarves dine in, well, probably the most legendary dining hall I have ever seen. It took me forever to build.
Walls and floors are constructed out of rose gold, entire room is lined in masterwork gold statues, all the thrones are (mostly) masterwork thrones made out of platinum, and all the tables are masterwork (mostly), and made out of gold.
Stockpiles contain every imaginable booze known to dwarf fortress, even goodly and evil beverages are imported specifically for certain dwarves.
But, due to a bug, a cannot make mead, beekeeping is problematic for me.
Food stockpiles are all lavish meals made from a variety of things, mostly high quality quarry bush roasts.
The entrance to the dining room is a combined mist generator / dwarven shower; when dwarves enter the dining hall, they get happy thoughts from the waterfall, and the constantly falling water washes them off, carrying contaminates down into a drain off the map. Directly under the waterfall is the bedrooms, so there is a waterfall down there too.
All of my dwarves have been sitting at ecstatic for many years, and I do mean all of them, all 211 of them.
Yes I know pop cap is at 200, but some babies were born.
tldr, perfect forts are boring, don't build them.
This fort has no fun to be had.