It would be interesting to see why someone would downvote it.

Since when are captchas a bigger issue than spam bots and fraud users?

and yes i also think that those tasks are actually helping our society. Adding models for self driving cars, for security/emergency breaking systems etc. So whats the issue?

I did not downvote you, but I assume it's because you're wrong. Depending on your browser settings, addons, etc. CAPTCHAs may be nearly impossible to solve. That is to say, you ARE solving them correctly, but Google thinks otherwise, and punishes you with ever more pictures that fade in and out ever more slowly. So the fact that they're easy to solve or work well for you means nothing. Other people are having real issues with it, and not because they are unable to solve them.

They could easily make that point by commenting right?

> It would be interesting to see why someone would downvote it.

If I had to guess:

> "solving one is not a real hurdle to you"

My experience is that it can be a real hurdle.

Sometimes reCaptcha forces me to complete 2 or 3 captchas (or more), some of them with an annoying artificial delay when loading new images. It seems to be worse when using a VPN or a browser like Firefox (or some privacy extension) that blocks Google tracking.

I understand why people use reCaptcha and that it works well for some users, but it can be a pain in the butt if you don't use Chrome, aren't logged in to your Google account, or if other devices in the network did something that Google doesn't like. I sometimes get captchas on my phone when using mobile data (on a major provider here in the UK) and Google search because of "unusual traffic from your computer network"...