I hate meaningfull identation because the tools I end up using suck at maintaining it. I end up bugfixing on customer systems, sometimes on systems used by coworkers. There is no editor with consitent tab vs. spaces or tab width settings. I had editors clear two indents at once, fail to correctly line up new indents more often than not. I will accept whitespace as sane block scoping method the moment every text editor follows the same settings out of the box with the ability to customize the settings removed.