Because the problem hasn't led to disaster and the country crumbling yet? Issues are there to be solved, not to make you throw your hands in the air and scream that the sky is falling and X is to blame, which in your case seems to be the welfare system, a system ensuring Sweden's continued financial power.
Mind you, my father says the same thing about the news. There's a reason why comedy shows had skits on the news being about "Eländes eländes elände..." even in the 60's. Idiotic policies by naive politicians + lower birth rates are not in the same bed as the Welfare system and the Free Market system.