Sex is a normal and very common part of human relationships of all sorts, but it's not for everyone. While some people choose to identify as asexual, others simply don't like it for a variety of reasons that may be medical, personal, or plain old-fashioned preference. If you feel that your dislike of sex is just something about yourself that you are comfortable with and know to be true, rest assured that there are many, many people eager for companionship and romantic relationships but who themselves, for one of a variety of reasons, don't enjoy sex.
The important things in relationships is to mostly agree on the big stuff, and sex is one of those big-ticket items that can be insurmountable if there's a fundamental incompatibility. But if you're honest upfront about this, then I have no doubt there are plenty of people out there for whom sex is an afterthought or even something to be avoided in a relationship.
If at one point you did enjoy sex, or wish that you did, I would encourage you to speak with a GP or counsellor who can help you understand where this is coming from and what you might be able to do about it.