Common Lisp

What is the rationale for progn, progv, block, let, flet, let* and return-from being special forms? They all could be simulated with TAGBODY and a few SETQs. C/C++ goes well with just {} being tagbody.

Common Lisp is stupid.

Multiple paradigms, I assume:
http://www.lispworks.com/documentation/HyperSpec/Front/Contents.htm

I can see cases when you specifically need just several of Data and Control Flow commands, even when a TAGBODY is a nice way to reference them.