well it's true traps can get boring - my fortress is very well protected - no one could enter it alive. but it's strange: nobody tries it. the regular kobold thieves simply don't appear anymore. it is fun to build complicated trap mechanisms - but if nobody steps into them they are quite useless.
i guess i will have to build up a military force too, although the sieges don't really bother me as i have everything i need in my fortress (i even have a forrest there, surrounded by a wall, about 100-200 logs).But how much time will it take to build an army capable of defeating a force of 50 well armed goblins? and is it really a good idea to attack the goblins if you can work on as if nothing has happend (i don't lose workers, i send them indoors then lock the doors and allow them to go outdoors again, the production goes on with no problems). Well maybe the head of their human macelord is an incentive to attack