The post discusses the suitability of the '.localhost' domain for local development, highlighting various user experiences and recommendations. Users share that .localhost is convenient as it avoids the need for manual additions to the hosts file on many systems, and it automatically resolves to localhost. There are discussions about the limitations on macOS where subdomains do not resolve automatically, requiring manual entries. Several users advocate for using a '.local' domain instead, referencing issues with HTTPS and resolution times. There is talk of tools and projects like Localias, which aim to simplify local development and enhance collaboration by managing local aliases through a shared configuration. The overall sentiment leans towards using .localhost for reliability, especially given its broader compatibility across platforms.