Have a hobby or special interest? Part of a subculture like musket shooters? Obsessed with a particular form of art or music? Like to collect things? If you can justify your own “thing,” can you not also recognize that others can equally justify their interests, however strange they might seem to you? No other species exhibits the diversity that ours shows in our foci on various activities, and that’s because we do much more than merely search for food and shelter.
None of us has either the desire or capacity to be genuinely interested in every subculture’s focus. All of us, however, can understand that, again, however strange such foci might be to us, our own focus can be equally strange to others.
* http://www.gutenberg.org/files/635/635.txt