Future?

I’m nearing my thirties and just finished my residency in general surgery. My problem is, I don’t see myself ever “settling down” (marrying, starting a family, etc). I enjoy being in relationships and dating, but can’t imagine myself marrying anyone. I really don’t think that I want to get married or have children ever, but I also don’t want to be categorized as a workaholic, loner, dog lady. Has anyone experienced anything similar? If so, did your feelings against marriage change or did you resolve your inner battle? Thanks!