Free sites generally offer more flexibility for different types of relationships, including casual hookups and same-sex relationships.
In fact, they’re not even exclusively for dating, as Ok Cupid allows you to be married or in a relationship but looking for friends.
Of course, it’s not always that simple, and there are exceptions.
But the key to finding the right site (or sites) for you depends on what type of relationship you’re in search of.
Free sites may also work better for individuals who are separated, but not yet divorced (or separated with no immediate intention to divorce).