Not everyone believes that romantic relationships are "one of the best things about being a human." Just because you believe it, doesn't mean everyone else does, or that you should imply that people are somehow "less than" for feeling otherwise.
As to your other comment, have you considered people who have mental illnesses/disorders? Their lifestyle (in every sense of the word) would not permit a romantic relationship, too bad they can't just "find another one".
As to your other comment, have you considered people who have mental illnesses/disorders? Their lifestyle (in every sense of the word) would not permit a romantic relationship, too bad they can't just "find another one".