I would say because it was originally associated with Egypt which had a pagan religion.
Some may be associated with Satanism, depending on the artist, however, there is no "real" way to know unless the artist is public about his or her religion views.
Not as far as I know, though depending on the band, it can be associated with satanism. Don't worry, not all death metal bands are Satanist!
The ankh cross is an ancient Egyptian symbol that represents life, immortality, and the union of male and female energies. It is often associated with fertility, health, and prosperity, and was used in religious and funerary contexts in ancient Egypt.
LaVeyan Satanism (the original) does not.
an Ankh
The Ankh
Only slightly: The scythe is commonly associated with the personification of Death which could be considered Satanic.... kind of.
no, not all Egyptian gods hold the ankh but many are depicted with the ankh, since the ankh represented eternal life set (or seth: god of evil chaos and disorder) was not usually depicted with the ankh
scarab Or ANKH
The ankh is the Egyptian symbol of life and the afterlife.
Life. Ankh, The Symbol of Life or eternal
No, Mike Portnoy is not a satanism.