Well I do not know for sure their motivations. They might be different from one to another. But I noticed that the personal religion of many if not most Christians is not strictly related to the Bible, but rather to some community of faith. The present Christendom will stand as it is without Bible. If one day the Bible will completely disappear from the world, they will not notice, will not miss.  Many are more interested in how much their religion is relevant to the more and more secular culture.     If we are a small minority, this is no special problem. True believers in the history of salvation have been always a minority. But to be a minority is not by itself a mark of the truth. By the way, evolutionists are not ”so many” in Adventism. They are a small minority. May God decrease every day their number.