I’m English, so I’ll be able to tell you about the situation in Britain, but I don’t know what it’s like in the rest of Europe.
In my part of the country, about 90% of people would identify themselves as Christian but I would estimate that only 2% of those people actually go to Church or even read the Bible. Christianity has become more of a cultural thing for most people. I’m 21, and I don’t know any other Catholics who are even close to my age, although I do see the odd few now and again at Mass, but they don’t attend regularly. Most young people have never read the Bible, and don’t even know the basic tenets of Christianity; but they still call themselves Christian if asked.
People who are religious are seen as seen as eccentric or wierd. I can’t speak for the rest of the country but that’s how it is in my city. When I was a kid, I got bullied because I went to Church and older kids started calling me a “Bible Basher,” they even ridiculed me because I was a Catholic and not Protestant. This is why I stopped going to Church when I was a kid.
There are youth ministries at Colleges and Universities but I never knew about them until I went looking. I attended the Catholic Chaplaincy a few times but they weren’t very orthodox in their views; they had gay pride flags up on the wall and they disagreed with Church teaching regarding sexuality and contraception. In my opinion, they diluted the Church teaching in an attempt to make it more appealing to young people, but I wanted solid, orthodox Catholicism. I stopped going because, ironically, I found it damaging to my faith.
That’s my opinion on the state of the Church in England. Some may disagree but these opinions are based on my personal experience.