I would say that you need to be 100% sexually compatable, even if sex is not involved.

If you are completely comfortable marrying someone without having sex, which is uncommon, and they are comfortable without sex, then go for it.

But you are giving up a lifetime of sex by marrying this person who doesn't want sex. Most people need sex when it comes to a relationship.

For me, I need someone I can have sex with, explore my fantasies with, and be comfortable with masturbation alone or with them.