A Match.com account is a social account, but it has a very personal aspect. Depending on what you share, it could be a security risk. Did you give the name of your hometown? What about your favorite color? Or the name of your first pet? This might be "too much information" for a dating profile. But many people add those things. And those are commonplace security questions for a bank account. For more : delete match account
how to delete your match account