Cloudflare captchas mean I go back to DDG, and once more wish for a browser plugin that removes href attributes to specified sites, so I don't make the same mistake twice.
I'm not feeding a fucking robot just to look at a page.
There are browser plugins to remove domains from DDG and Google (for me: Firefox, DDG: https://addons.mozilla.org/en-US/firefox/addon/ddg-hide-unwa...)
Lots of people don't and that can create a serious problem when someone else is doing it. It's not unreasonable to have it in a cons list.
Also the cloudflare captchas absolutely suck. That's a huge con and you really shouldn't put up with it.