As a child, back in the 50'60's, I, with my brothers, was 'taken' to church every Sunday because that's what you did. Our rector was a nasty, horrible man, so as soon as I could stop going, I did. I was married to my first dh in his RC church rather than in my Episcopalian one due to that same rector. When my children were born, they were baptized in my 'old' church, they recieved First Communion instruction there. However, we really didn't attend church. So...fast forward to the early 90's. I wanted to remarry, I lived in my old home town, I wanted to marry in my family church. So, we checked it out. Much had changed, we joined the church. That was 16 yrs. ago. My 13 y/o dd was baptized there, received her First Communion there, will be confirmed there.
I have many friends in this church who are deeply spiritual, but their adult kids have 'left the church'. One friend has three kids who all married outside the church. They say that they just don't 'get it' when it comes to church..that they just don't need the hassle. Of my two older kids, my 33 y/o ds now attends a church but that is due to his finding a young lady who's spirituality is important to her and his family's beliefs seem to be coming forward!!!
My 13 y/o dd tries to find ways to avoid going to church. It's simple a sleep issue. But, for her, she has to be there at 9:25 and church is only 5 minutes away, so she can get up in time. Yes, teens need the sleep, but their inner cycles seem to be changing to falling asleep later and later at night. So, if she wants to stay up late on Sat night, it's her problem when she has to get up for church!!! She does enjoy her class but it is a more contemporary one called Rite13....made just for this age group and is geared to the stuff they find to be compelling in life.
I think that you need to find a middle ground here. I know that there are some who say that kids should find their own religion but for heavens sake, these kids are still in middle school and high school. They need to have some basis for comparison in order to make choices. Basically, most are just too lazy to get up in the morning for something that isn't mandatory or fun!!! We make our children eat their veggies even if they aren't crazy about them....if you feel that church is an important part of your life as a family then your kids should be going. Not everything in life is a ton of fun...sometimes we have to do things that we aren't crazy about. Down the road, it makes us better people.
Stepping down off my soap-box now.