[coldtea]

Well, people have changed sexual orientation. Straight to gay, lesbian to bi, gay to transgender and vice versa.

If that's not "a choice" I don't know what is. Just because it's not often a choice doesn't mean it can't be.

[mattcoles]

In the same way that some days I am happy and other days I'm sad, doesn't mean that my mood is choice.

[coldtea]

Well, to keep with the example, people can also chose to be happy or sad. Some revile in being sad -- others opt to see the positive side.