I wish recaptcha would let me disable audio captchas - I'm pretty sure all the spammers solve them that way.
The volume of real users that want to sign up to my site, and are blind, and don't have a Google account, and clear their cookies frequently enough to get an extra recaptcha challenge, and can't just call support to make an account for them, is probably zero.
Yet the number of spammers that come in that way must be in the millions by now.
I’m thankful they don’t. Recaptcha already makes me usually close the tab instead, without audio captcha it would make me close it 100% of the time. I’m not spending 20 minutes hunting for dumb images.
I'm not a spammer but I always use the audio option. Typing one word is way less onerous than clicking through multiple screens hunting for level crossings, fire hydrants, etc