Romance is my favourite genre, and I prefer two points of view in a romance: the heroine and the hero (in that order).
Especially if the book is written in third person point of view (as most are).
If the story is in first person, then I don’t mind if there is only one point of view … but in these cases, I prefer the female viewpoint over the male.
While I enjoy first person point of view, I do think it works better in some genres than others. Women’s fiction? Fine. Rom Com? Fine. Romance? Not so sure …
(There are exceptions. Gabrielle Meyer’s excellent Timeless series has only one point of view character, but she’s living multiple lives.)
Young Adult often focuses on one point of view character, and it does a great job (just don’t write two books in a trilogy from a single point of view, then switch to two points of view for the third book. Please.)
Most other genres benefit from having more than one point of view character … but not too many. One is fine. Two is great. Three is good. Four or more … there better be a good reason for it (and killing off point of view characters is not a good reason).