As to what to do. I discovered Dwarf Fortress a few weeks ago and have had a great time learning the ropes, but each Fortress I start out usually ends with me abandoning it with little fanfare. The problem is I will have fun making a self-sustaining fort, trying to adapt and cope with different environmental challenges, but then maybe by the second year or so, the immigrants are driving me damn near nuts. I love micromanaging, don't get me wrong, but having to find things for 20 new dwarves to do is tedium beyond description. I've tried grand construction projects by enlisting all those new guys into a masonry army, or similar public work projects with other industries but it just ends up with those 20 dwarves sitting around once more after it's all done. It gets to the point of where I dread immigrant waves, and eventually they just have me toss the whole thing to the wind. Don't even get me started on those high master cheese makers. What're they going to do? Milk my cats? Expanding industries to give jobs to new migrants just ends in a ridiculous amount of wasted space, increased value of my fort, and -hoboy!- even more migrants next month!
To put plainly: Immigrant waves are ruining the game for me, any tips for dealing with them?