Being an independent sort, choosing your own match may sound like a better deal. Let's be realistic, though.
Matchmakers have an advantage.
After each match, a good matchmaker gets feedback from both parties about compatibility and suitability. Matchmakers frequently do a better job, simply because they are better informed that we can ever hope to be. These are the same people who do well at happy hours, parties, dances, and everywhere else. There is nothing wrong with that, more power to them. Matchmakers gain an appreciation for the individuality and uniqueness of each person in their group.