Dorf Fortress page had a quote which terrified me... "losing is fun". Well sir, I don't like losing but I like dwarves throwing tantrums on magma filled fortress.
To whoever don't know, the game can be downloaded here and it's both graphically poor, complicated and CPU intensive. If you want lifelike textures and a smooth learning curve Dwarf Fortress isn't your game.
DF kinda remind of a mix of SimTower with TheSims, with the expection your "tower" will crumble sooner or later and your "sims" are infintely more entertaining and dangerous. It's the voyage, not the miasma filled destiny which matter.
Remember, losing is fun.