If you were an only child, how did that affect your romantic/intimate relationships?

If you were an only child , how did that affect your romantic/intimate relationships later in life? Or if you ever dated a person who was an only child and you were not, how did you view him or her?

Being over 30 and comfortably single for years now, I’ve come to the realization that my psychological make-up might have a lot to do with the fact that I’m an only child.

Although I can love and care for others deeply, growing up without siblings I find I just don’t feel the need to share my life 24/7 with someone. I also severely dislike arguing/fighting, which seems to be a part of all intimate relationships and which it seems people who grew up with siblings seem to be perfectly content with.

Thanks.