I couldn't disagree more with manicinsomniac.
So, while I can see how annoying it is to be somebody suffering from an invisible disability, I think a general 'benefit of the doubt' attitude to everyone would be a bad thing
It is way more than 'annoying'
Judgemental people only isolate already isolated people further.
The last thing they need is free rein to continue their behaviour because society at large becomes so tolerant that it assumes they must have an invisible disability, which is statistically pretty unlikely
Around 20% of the UK population has a disability, It is estimated that 70% of people with a disability in the UK have a hidden disability.
So really, it is not statistically unlikely that the seemingly able bodied person you see using an accessible facility is a 'faker'
People with disabilities shouldn't be 'tolerated', They are part of society, not a barking dog or a bad smell.
So basically, carry on making things harder for people with disabilities because of some selfish arses who abuse the facilities?
What progress.