Helena that etymology of handicapped is false. It was only applied to people with disabilities after the First World War. It has nothing to do with the phrase 'cap in hand.'
The use of handicapped actually comes from the sporting practice of attempting to even up a horse racing field by adding weight to well fancied horse which were thus at a disadvantage. This use far pre-dates the term's application to people with disabilities.
Interestingly a training session on access for people with physical disabilities. There are a small but growing number of people who would self-define as being crippled or having a crippled limb on the grounds that the term cripple refers to the physical impairment whereas disability is as a result of the society we live in.
So having non-functioning legs, doesn't disable you from taking a job, but you are disabled by the fact the workplace is on the third floor with no lift etc. etc.
Obviously the use of the term cripple is hugely contentious but it is interesting food for thought, but thinking about language, how we use it and what it means isn't 'PC loony nonsense' but it matters.