I've worked on four GraphQL projects. Three were backed by a relational database, and were not really that enjoyable. One was backed by a graph database (Dgraph), and was a delight: No data loaders, no N+1 problems, and in some cases no resolvers (Dgraph's query language was a superset of GraphQL, so sometimes we could just feed it the client request directly)!

I've had my fill of GraphQL, and won't be sad if I never use it again.