Lucid dreaming is an idea that requires dedication, and nobody really wants to dedicate their time to that when so many other options are available. In reality lucid dreaming doesn't take long to master. With the right amount of dedication and practice an average person could master a technique in 1 month. The fact is that when people google how to lucid dream, they see how much effort it takes and pass it off as a useless hobby. The combination of misinformation and preoccupation with other activities (such as texting friends or playing video games) really doesn't let lucid dreaming take off like other trends of today.