Aye, Flob makes some good points, there. It just wouldn't feel like Bonfire without these guys. xD
Personally, though, I don't mind Mate Centers too much.
While I believe it's best to join a roleplay and actually write out the love story between your character and another over time, I have to admit that at least with Mate Centers you can instantly make a new in-game friend, and in a sense you're both complimenting one another's characters (since you chose one another). It's just a way to find a new companion to pal around with in-game, and I see nothing wrong with that. Plus, both of you will be willing/excited to roleplay with one another, instead of just taking a wild stab in the dark at whether or not some pretty character would be willing to even speak to you, as it tends to happen at times.
/I digress~ Slight tangent, thar.
But anyway, it would be odd without Bonfire's Mate Centers. If anything, there would be more of the mate-seekers running to actual roleplays, or random people sitting around, to find a mate. It could go either way, here, but I think Mate Centers are a kind gesture, as far as their purpose goes (putting the oft-used caps raging in Local chat aside).