Probably. There could be a lot of reasons for it. Who knows. I remember when I first started there were a lot of places where you could roleplay. Groups, forums, etc. But, with time, a lot of those places have become unavailable not to mention people have lives outside of roleplay.
What you may have been able to do as a teenager, you can't necessarily do when you are an adult, have a family, and so on. I know some people get to a point where they ease out of it completely. Everything is changing, it's the nature of the game.