I just read a great quote which expresses very well one of the reasons I stopped being a trotskyist:
“[The transitional approach is] akin to trying to persuade someone who believes the Earth to be flat that it is in fact a sphere by first convincing them that it is a cube. The terrible irony here is that such ‘credible’ demands are utterly impossible to achieve under capitalism and do not even articulate the need for socialism. They are truly transitional to nothing; save sowing illusions.”
The rest of the article is worth reading as well.