I used to hold more militantly atheistic views, but now have found a modicum of peace with most believers. I still think that Christianity and Islam, in particular, are silly and nonsensical, but don't feel the need to tell every follower of those faiths.
I also think that secularism is making decent progress. Rational and scientifically based understandings of the universe and human existence are relatively new to human societies. Darwin published The Origin of the Species less than 150 years ago and modern physics (relativity and quantum mechanics) are less than 200 years old. The world's religions have at least a 1,500 to 2,000 year head start on modern science.
I really don't know anything about Swedish history, but guess that if we stepped into a time machine and went back 100 years, you'd find a country more similar to the U.S. in terms of religious belief among the population. Perhaps not people who handle poisonous snakes while asking God to protect them from being bitten, but lots more Swedish people who believe in God or the supernatural in general. Europe, the source of America's religious heritage, became dramatically secular over the course of the 20th century. I don't doubt that Americans will look at their Bibles and Korans with greater skepticism as we march forward into the 21st century.