I think you're confusing the definition of passion/hobbies and sexuality, my dear.
With that way of thinking, this would mean gamers (another sub-culture) should be included xD
Sexuality is attraction to something. You can be attracted to a certain gender, age, species, or just everything. If you are into furries that's certainly your sexuality. If you can only get a boner from looking at teapots that's also sexuality.
If you demand respect or gratitude for your volunteer work, you're doing volunteering wrong.