Some of it is the increase in awareness of other religions aside from ones own, and the ability to get information quickly from the internet but also be able to get their own info across more easily even if it's incorrect (eg the article out there today saying that SS marriage will lead to hundreds of thousands of abortions)
But the other thing is people trying to legislate what other people do in their lives to be in accordance to only the politicians religious beliefs (whilst at the same time complaining about the same being done to them by a different religion).
Religion is and should only ever be - personal. It's yr relationship between yrself and yr God/s. Not everyone else