If you're asking if it's normal based on what a larger group of people feels about relationships, yes, it is different than the norm. If you're asking if it's normal in the sense of asking if it's an acceptable thing like, is there something wrong with you because you aren't interested in a relationship, then no, it's not.

If you're concerned as to why you now have no desire for a relationship right now, the answer is best found within yourself, and we here may be able to help you answer the question but there is no way we can give you that.

What I would do is ask some questions of yourself. Things like, "what changed", and "what is it about a relationship that is objectionable". These things are only answers you can give and if you really look within you can find out why it is right in this moment you don't need a relationship.

My speculation would be that something in your past relationships gives you reasons to see them as negative. When it's been some time since you've been in a relationship and you gain some distance from the emotional aspect of it, you tend to be able to see them more objectively. Perhaps that's what you've come to realize. That you see too many negative aspects of being in a relationship over the positive aspects. Maybe I'm going out on a limb here but it sounds like if you couldn't feel complete without relationships before it was a dependence thing. You've probably been able to enjoy the things that come with accepting your independence now and you've become content with that. A relationship would imply giving up a lot of that independence you enjoy now.

But in summary it's perfectly normal and acceptable, especially if your past relationships were bad or even just a little rocky.

hope this helps.