Yes, there are definitely seniors who are not well off, and traditionally discounts were available, I assume, because these folks were no longer working and on a "fixed income" (which is no longer fixed). But I always find the blanket senior discounts rather ironic as the wealthiest group by age in the US is the 65-74 group, followed by the 55-64 group according to a Federal Reserve report that covers 2010-2013. And the 74+ group is still better off than all the groups below 54. This article charts the age distribution by age and links to the more comprehensive Fed report which covers multiple topics.Wealth Is Distributed Extremely Unevenly Within Every Age Group | Demos
A few years ago I read (and have never forgotten) that retirement security for the Baby Boom generation can be divided in thirds: the top third will have no worries, the middle third, called "the worried well", have savings but will live "right on the edge", and the bottom third will have no security in retirement at all. That's two out of three in that generation who will not be secure. I personally know many people who fit the middle and bottom profiles all too well.