Depends on the people involved.
My wife can exist perfectly well without any form of sex. And has for years. Decades really. She really hates everything that has to do with the male body. Rumor has it that she has in the distant past performed some self sex.
To me, it is wildly important. Yes I am so frustrated that my eyes are crossed. I would go elsewhere for sex if I could have found anyone who liked it. Yes, I am a pathetic looser.
Anyway, if neither party cares about sex, it is a relationship formed in heaven. If both parties like sex, you are blessed by what ever gods you believe in.
If only one of you is interested in sex, prepare for a living hell. Just live alone and engage in self sex and be done with it. Unless there is a lot of money involved. Lol.