I like to create sculptures  with my mind and my hands
Great!!  I like to think of sculpture as a 3 dimensional painting.  They are very visual art pieces.
i like how a sculpture takes up space. 
Yes, quite.  A long time ago they would carve wood or stone, or use clay to make a model, but these days there is no limit to the materials which can be used.
my favorite materiel is metal. the gridiron of the metal and the sparks flying everywhere.
I concur.  We still have ancient sculptures that were carved in stone, due to stone's durability, but unfortunately most of the wooden or clay sculptures have long since disintegrated.