I almost always do things that I like, in some form or fashion. Every once in awhile that means that I don't think the script is any good and I don't have any trust in the people, but the film is shooting in Sri Lanka, or somewhere like that, so I'm going.
I have learned, as a rule of thumb, never to ask whether you can do something. Say, instead, that you are doing it. Then fasten your seat belt. The most remarkable things follow.