It is a very interesting question and very difficult at the same time. The answer depends on many circumstances. And I think this is not nessesarily about the age but rather about your social status, whether you have commitments or not. If you have a family, home, children or parents to care for you are not likely to leave it all behind and run after your dream. It also depends on your character. Some people are  reckless enough to sacrifice their welll-being and conveniences to the hypothetical chance of their dreams coming true.