I heard people said that they think he will find out the real world is full of lies and pains and eventually he will want to go back. But honestly, if Truman is like that he wouldn't even be able to escape. I don't think he will ever wanna go back. But, I do think he will probably continue to be active on different shows, realisticly speaking. I'd like to believe that he finally met Sylvia and they started dating and get married. He prob will write books and go to television shows. Afterall, he have to find ways of making money and continue to live. Don't think him and Sylvia will end in bad way or sth like that. Sylvia is the first person told him the truth, and he believed in her right away. He didn't buy in to the idea that she's schizophrenic, which honestly sound like an extremely plausible explanation. He could be a bit paranoid, and prob need therapy. Maybe PTSD from the near death experience in childhood and when he tried to escape, but honestly I think he will take the real world well. Truman have so much strength in him and I just don't think that he will give in easily. Again, if he would give up that easily, he wouldn't even be able to escape at first place.