Well, I was in a situation where my small company had two people and I needed another programmer. One applicant came in who was clearly older - in his 60s I would guess. He came to the interview with a walker and looked in very bad health.

I really didn't care the age of who I hired but my company was tiny and it was a struggle for me to pay a good salary and provide insurance (both of which I did). I was not looking to take advantage of anybody. However if somebody came on and went on extended medical leave, I wouldn't have been able to keep paying them - not out of personal greed but because there literally would not be money to pay them. My salary was not much, if any more than my employees. Possible I might have had some legal obligation to keep providing some type of insurance - I'm not sure.

As it turns out he was completely unqualified - his resume did not jive at all with his knowledge - so I did not have to face the dilemma of whether I would hire him vs a younger, healthier applicant. But it did make me think and appreciate both sides of the situation.