FTFY. Please don't make this thread yet another no-go area.
what? well im sorry sir i cannot let the
children infestation of parasitic mini-nobles spread in my fortresses without control, and my advice of making child smashers is genuine advice. Atm there is no child limit and children take 12 years to mature which is more than the life time of any fort i've had yet (my current and most successful fort is in it's 7-8th year).
There is no practical use at all for children except to replace fallen dwarves where immigration is scarce; and they do NOT fullfill this purpose very well in most forts because dwarves breed so prolifically but grow up so slowly so you end up with a un-controlled childsplosion thats just a large tantrum waiting to happen.
even when there is limited immigration (like in my case, my civ has no capital or ruler to begin with, i wonder why this civ was even available to play at the start, "The Blue Tours" is a dead civ and even though i had minimal casualties in dead dwarves i still only have a population of 150 in my 7th year...) and with a 20% adult population child-cap in place. The replacement or addition to dwarven population using children comes at a costly price.
This price is that no matter what labors you have to keep everyone busy, children end up making friends in their childhood, and you will slowly but surely have many dwarves with relationships to each other despite your best efforts to keep them apart. All it takes now is a single goblin ambush, a single forgotten beast run loose if even for a few frames, to send your fortress into a spiral of dumbness cuz you didnt have enough child smashers to take care of the
children problem in its infancy.
oh and 1 more thing, your experiment was in a non-dangerous "test" situation, try it in a terrifying biome with 4 towers and if you are successful for idk, 12 years? then you might just have a point...