I often feel like we should be calling abled/nondisabled people enabled, because they are enabled by the society that disables the rest of us.
Enabled people have needs, limits, and health problems just as disabled people do. There are limits to how long they can stand or stay awake, how far they can see, how much weight they can lift or how far they can walk. There are limits to how much stress they can handle or how much or fast they can focus or comprehend or remember. They need emotional support and healthcare too.
Society is built with their limits and needs in mind, though, enabling them to participate with an ease that disabled people are simply not allowed.