Hans's short poem is about an unfair imbalance in relationships. The speaker says they have always been "an option" in other people's lives, someone who can be picked up when convenient and set aside when not. Meanwhile, they treat the people around them as a priority, giving them the importance they never receive in return.
The feeling underneath is quiet hurt. The speaker doesn't shout or accuse anyone. The tone is plain and almost matter-of-fact, which makes the sadness feel more real, as if this has happened so often it has become an ordinary fact of life. The word "just" in "just like to treat people" also suggests a gentle, even slightly helpless generosity: this is simply how the speaker is, even when it isn't returned.
The mood is lonely and a little resigned. The short lines and spare wording leave a lot of silence around them, and that emptiness mirrors the speaker's sense of not being fully counted.