Everyone has a disagreement at some time or another, but it's how you tackle it that determines whther it'll turn into an argument or not. I think me and my husband are very good at listening to each other, and then putting our own points of view forward. It's a case of respecting each others opinions.
Some people are more than happy to be without a relationship though, and past experiences can put others off. The advantages of being in a good relationship are that you're given the trust to be your own person, yet have someone there for you at the end of each day, and being able to share laughter, fun and the enjoyment of just being together.