why? what is your problem with it?
yes, the captchas are annoying, but cloudflare already did their best to avoid showing them and make then as easy as click a box (instead of select 3 or 4 times images or try to read some distorted letters/numbers)
Yes, they are big and control many site traffic, that is a danger, but mostly to the sites, not the user... but they are also big because they work well and are much cheaper than most alternatives (that usually even perform worse)
Yes , a site without it would be better, but like email got unusable without spamfilters, sites owners are having huge problems with either attacks or bots, if you have a big enough site, you are a target and have huge amount of bot/ai traffic... that they have to pay for
you also have more and more sites using anubis (https://github.com/TecharoHQ/anubis), that is opensource, to try to block bots/AIs, so clearly is not a problem with a couple of sites