What to do with a frigid wife stay, leave, run

Been married 8 years wife shrugs off attention more now then before. When traveling sometimes likes sex, "saying honeymoon time". Other - most times she is a calculative person treating our marriage more like business then a relationship. Refuses to kiss but willing to kiss a dog and claim that I will infect her with germs.
No for-play least understands nor wants any part of it, I have to watch a little porn to get hot just to be ready to penetrate and get it over with. The only touching is to our sexual organs enough for her to get wet, orgasm and end of story. I need kindness, touching, human attention that I consider normal in any relationship.
Instead I get a machine ready to scold me. tell me how, when and where to move my feet and arms (Pinoccio?). I keep telling her that she does not know or understand the words; marriage, sharing, cooperation.
See other couples that hug and kiss want that in my life and not have to watch it. She refuses to talk with me about these problems as if I am the one causing problems...to some degree maybe because sometimes emotional state loss what rises without foreplay.
We have been traveling for the last 5 months from Europe to now in S.America and can't wait to get ack to the U.S. We have had difficult financial time unemployment, plus and she refuses to work or help. From doing her nails, hair, massages, plus,plus she thinks to look 20 - 30 years while reaching 61, granted very attractive and good figure but no morals when it comes to being part of a marriage.
Now her brother is offering to send her traveling through India which takes me back to the first 7 years where she was gone because of free airline tickets.
If she leaves asking her to not come back.
Any thoughts from anyone, thx.