Easier Path

It is not that meditation is the only way to reach that stage of an experience of oneness and unity with God, the world around you.  It simply is the quicker way because it has less obstacles.  Other prayer ways, such as Scripture meditation, novenas, rosaries, worship and sacraments can get you there too, but meditation has less speaking and words on your part.  You talk less, focus on thoughts less, use the imagination less, and so you are better able to listen to something or someone deeper that your thoughts, images and words.  All forms of prayer are useful, but it helps if you have some idea in mind as to why you are praying at all.