Anyone who monitors their web traffic would tell you the bots are ruining the web.

I hate these "are you human" checks too, but when a persistent threat is poking your defenses and legitimate web traffic is only 10% - 20% of your server load... you have to do something.

So the alternative here to receiving a challenge is that the site would just be blocked in your country or for your network provider.

Would you prefer to be outright blocked, or is it ok to have an annoying "are you human?" challenge?