The biggest reason to not use the apex domain is because a CNAME on the apex will render other records unreadable, and ANAMEs suck. They're great reasons. Howe

The biggest reason to not use the apex domain is because a CNAME on the apex will render other records unreadable, and ANAMEs suck. They're great reasons. However, Cloudflare already offers something called CNAME flattening for apex domains and there's already an AAAA record type that works like a CNAME but without all the problems they cause. Granted, not all DNS providers support this, but if they do, is there else anything wrong with using the apex domain? Isn't the cookie problem a solved problem?