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.
but there will always be more to replace them
Ancient Greek art
Ancient Greek art stands out among that of other ancient cultures for its development of naturalistic but idealized depictions of the human body, in which largely nude male figures were generally the focus of innovation. The rate of stylistic development between about 750 and 300 BC was remarkable by ancient standards, and in surviving works is best seen in sculpture. There were important innovations in painting, which have to be essentially reconstructed due to the lack of original survivals of quality, other than the distinct field of painted pottery.
what these two-dimensional image renderings would look like in three-dimensional form. The tension between the photographic-realism of two-dimensional visual media and three-dimensional sculpture has been the theme for most of Penny’s career.
“I try to situate my sculpture somewhere between the way we perceive each other in real time and space and the way we perceive ourselves and each other in an image.” – Evan Penny
With the word "stretch", Penny is referring to the editing effect of the