Little Bear,
I think you're right, and your question a good one.  I do believe there will be people of faith out there, but that faith will look different from what the traditionalist Catholics see today.  

More and more people today are trying to look beyond the symbols, to the meaning behind them.  And surprise, surprise, as they begin to discover what some of that meaning it, they are called to dig deeper, to think differently, and above all, to grow.  That growth will take them where it leads them; I doubt it will be the church as it exists today.  We're at a 500 year watershed, and what comes of this will not be what it is today.   I'm sure there will still be a very small, highly vocal group of folks, much like a cult, decrying the world, pointing fingers, condemning those who led to the demise of what "once was," etc.  What emerges will be what always was: people seeking God using whatever tools they can find. When the church ceases as an effective tool...