Interesting word. Can be used in different ways, some of which sound more "right" than others. I agree that to say "I am orientated towards..." sounds 'clunky' as etaoin puts it. But the past participle "orientated" doesn't sound as bad for some reason, especially with the prefix dis- added. Disorientated sounds better than disoriented to me. But the present participle sounds better (to me) as disorienting. And if you can't have orientate, how would you form the adjective or noun from it? What would you call an Orientation Day for new students at a College or University? An Orience Day? Doesn't have the same ring to it.

Interesting to consider the etymology of the word. I presume it comes from aligning everything with the rising sun.