I am not a native English speaker, but queer is repurposed by the LGBT community to include everyone, under a single name [1]. It can even include heterosexuality [2]. I definitely do not read it in any derogatory way, and would identify myself as queer.
[1]: https://en.wikipedia.org/wiki/Queer
[2]: https://en.wikipedia.org/wiki/Queer_heterosexuality
Edit: formatting