How come I have to prove I am not a robot every time I post a question?

Every question, every answer, every damn edit. I'm getting sick and tired of it myself.

Because whomever programmed the captchas did it incorrectly. It shouldn't require a response for every post. A good captcha program shouldn't require you respond more than once per login.

It may be because you're asking/answering too often and too quickly causing the reCAPTCHA program to think you may be a robot

All I can guess is they're trying to get people not to come to this site anymore.

They are over the top. Maybe they think people will will be used at first then when there are no more questions they job will be transferred to bots.

Sometimes there are too many questions. As you click on the images and more keep appearing. Some of the photos are very fuzzy and it s difficult to see what s there.

It could be that someone is doing some soft of testing to collect up a database of human selected photos of varying levels of quality and see how poor the photographs are before humans can tell the difference. There do seem to be a lot of photos of streets.

Cars, cycles, traffic lights, buses, fire hydrants, shop fronts, road crossings ...

Of all the images that could be show they do fall into a small selection. Also many are very American, e.g. buses, crossing, traffic lights so it is not a good choice of subjects for an website with many visitors from outside the USA.

So I think this is being done as part of an AI image analysis project for self driving cars.

Because you might be a robot.

It is a new anti-spam measure to prove that you are a human and not a bot. It is being used to fight spam on the site.