I understand that many people on the Autism spectrum struggle with things like forms. Finding that out (along with a diagnosis of Aspergers from the NHS) helped me immensely, finally revealing why filling out a simple expense form at work takes hours and causes tears.
I have found something analogous that causes me distress and makes me abandon online engagement: reCaptcha
Ostensibly designed to differentiate robots from humans it feels particularly capable of differentiating me. It's particularly insidious on company contact forms, when I want to seek clarification, access help in using their services, provide feedback or make a complaint. I often give up trying to contact a company because I don't want to deal with their obnoxious reCaptcha.
Is this just me, or is this a more general concern for people? If it's just me I'll continue coping with it, but if I'm not alone on this then it may be worth highlighting the challenge and encouraging companies to provide more friendly anti-robot checks.