Recently I've come to realize how many of the people I know could be categorized as aromantic, even if they don't use the term.
About two years ago I met up with a former classmate of mine, because we had moved to the same town. When we were talking over dinner I shared with him that I recently realized I was aromantic. He told me he had considered if he was too and shared with me his struggle in interpreting his feelings.
At my new job in this town I befriended a colleague. Recently I asked him if he'd ever been in love and he told me no, even though he has a girlfriend.
And last spring I was on a trip with a friend. We talked about relationship and I told her about my aromanticism. She shared with me that she had never been in love and the main reason she was looking for a romantic relationship was to have a co-parent to raise children with.
I think the distinction for people who chose to identify as aromantic is not really the lack of romantic feelings, but rather that it affects our relationship choices. All those three people I mentioned are, or plan to be, in committed romantic relationships. Even though they don't feel romantic attraction.