@browncoat - Yeah, my favorite way of explaining this is to show people a little comic strip, with a group of children waiting to enter school, but blocked by snowfall. There is one child in a wheelchair.
The entrance has a small wheelchair accessible ramp and a larger set of stairs. And the janitor is clearing the stairs, instead of the ramp.
Yeah, the stairs are more obvious and will be slightly more convenient for the other students because they provide wider access.
But if he cleared the ramp first, everyone would be able to access the school that way, rather than just the able-bodied kids. Most of the time, the methods that are put into place to accommodate the disabled are things that do nothing or very little to inconvenience everyone else, but we think of them as somehow providing preferential treatment, which is rubbish.