I don't really follow the above. As a simple matter of fact and aside from the possibility of having oneself irreversibly sterilized (in the case of having children), aren't those indeed the only two possible choices? You can't exactly choose now to never change your mind in the future about something, especially since many of us know of numerous cases in which people have changed their minds about matters on which they once had "absolute views", as
@namae pointed out above..
Oh, I definitely would NOT say that it is ***evil*** or anything remotely like that, only that it is often mistaken.
Moreover, it doesn't really matter in a practical sense. It would be obviously idiotic to do something that you don't wish to do simply because you *might* change your mind in the future. So whether or not you you consider it possible that you will later change your mind, you still have to make current decisions based on your current view/opinion. It only matters if you take some action that somehow takes away your freedom to make a different choice in the future...sort of implying that you don't trust your future self to follow your wishes (which would be kind of weird imo).
I think it is hard to convince older folks like myself that someone's absolute views are unchangeable because most of us have been around long enough to see people (frequently including ourselves!) with apparently equally strong absolute views end up changing their minds as the years and decades pass.
In the current context I definitely know of this happening to multiple women who firmly believed that they would never want children during some early stage of their life but who ultimately changed their minds. In the happy cases, this change of opinion occurred before their child bearing years were passed, but I also know of cases in which it was not until they were far too old to become pregnant. In the saddest such case I know, the woman (now in her 60s) cannot even bear to hear other people talk about their children as it drives her to tears and (she believes) can bring on periods of depression; she literally asks her friends not to mention their children to her. But still, it doesn't matter. It would be crazy to have a child now simply because you *might* feel like this woman (who is surely an unusual case) decades from now.
I suppose one can look at one's past history of changes in opinions as supporting an absolutely confident view or not. In other words, if you have never changed your mind about any strongly held opinion in response to new information and experiences, that would support a belief that you never will in the future either (though never with 100% confidence of course). Whereas if your opinions and preferences have been less than totally rigid and unchanging in the past, that suggests that future changes are quite possible.
-Ww