How Terrible are captcha now a days?

One of the most annoying things on the internet today are this random generated captcha. I know the purpose for it but is it really necessarily to be hard?

I came to realize this captch thing is gonna kill the users on the internet. It can turn off user friendly interest at the same time it makes a site's interaction worse. Websites that would allow visitors to comment would find it difficult if you have this kind of captcha.

It's really a bit hard to read and figure the things being shown. And the worse part is that their is no button to generate another captcha. The text are blurry and you can't even zoom it in.

Here is another mind blowing captcha that you don't want to try(see pic below)

Seriously how are you gonna input this kind of captcha? This consumes a lot of time and users would loss interest on a certain site because of this. And if the site is an ecommerce site it could be one of the reason that the sales would drop down.

Who would purchase their items on that certain site when it all gives to the users are pain in the eyes. Seeing this impossible captch to solve and read makes someone irritated for a while.