[1letterunixname]

Yes and no. It's more like flossing than wearing a seatbelt. The html tags won't fall out if you use http:// over port 80. It's not nice to end users in that it permits eavesdropping and content modification of website traffic in the clear by anyone in the network path. The assumption of http:// is that "pamphlets for the public" don't require privacy, confidentiality, and nonrepudiation for other users such as downloading software sources &| binaries or exchanging secret PII. The post-Snowden/-PRISM world opted to deploy https:// ubiquitously as both a virtue signal and technical defense to various problems inherent to using port 80.