Dualistic thinking Options

Dualistic thinking is very relevant to people following spiritual paths of any kind, since it involves believers who claim to see and experience another existence and others who having not experienced anything they would describe as other-worldy, disregard these claims and it therefore divides people into two camps.

The language used is also a form of dualism as it separates entities into good and bad and places into discrete areas thus: Heaven and Hell.

Is dualistic thinking useful and a good way of hanging ideas on hooks for further exploration or does it lead to extremes of thought that lack balance and settle people into positions that are hard to find their way out of?

dualistic thinking is not the same as dualism.
and even so, breathing and not breathing are the same. Not breathing is just a gradation in breathing.
white and black, white is a low gradation of black, both are colors, both are waveforms, they are not really dualistic, they are gradations of the thing we call color.
The same can be said for most of our dualisms.

Its like this, If you took out some "bread to make toast", did you take out toast since you already knew its purpose and as far as youre concerned it is toast?
Is it bread because thats the form it was in when you took it out and you thought of it as bread even though you knew you were going to make toast?

You did not make a choise, you where hungry, you thought a toast would taste fine. So you picked a slice of bread, you put it in the toaster and turned it on. The toaster then produced a toast. You then eat the toast. The toast is consumed.
You did not really have to make any dualistic thinking. Perhaps you where presented the choice of bread vs. toast. A difficult choise, but after wheiging different factors of personal taste and time, you came to the logical conclusion that toast would be best at this moment. Perhaps if you overslept and had to hurry a piece of toast would not have been an option.