That's debatable. There haven't been too many pro-American demonstrations in Iraq or Afghanistan since we arrived. My guess is that many in both places are glad to be rid of Saddam or the Taliban, but still aren't too keen on us.
Of course, at the very least, you need to subtract from that 50,000,000 all the Moslems in both places doing their best to kill Americans.
Define "many", then cite examples where many "aren't too keen on us" being in Iraq and Afghanistan.
You'll find in your research that many are too nervous to "go it alone", and want us to stay in Afghanistan and Iraq as long as possible until they are sure enough that they have a handle on the situations with the proper amount of logistics and resources to "go it alone" in their respective countries.
You cannot spread peace and prosperity by cutting and running.