Counterproof node is a cancer

gistfile1.js

var http = require("http");

function fibonacci(n, callback) {
    if (n < 2) return 1;

    if (callback)
        setTimeout(function () { callback(fibonacci(n - 2) + fibonacci(n - 1)) }, 0);
    else
        return fibonacci(n - 2) + fibonacci(n - 1);
}

http.createServer(function (req, res) {
    res.writeHead(200, { 'Content-Type': 'text/plain' });
    fibonacci(40, function (r) { res.end(String(r)) });
}).listen(1337, "127.0.0.1");

//
// Sample only to prove the non blocking
//
http.createServer(function (req, res) {
    res.writeHead(200, { 'Content-Type': 'text/plain' });
     res.end("Non Blocking! " + req.query);
}).listen(1338, "127.0.0.1");