Trust your experience
We’re creatures of habit. Habits automate decisions for us, so we don’t have to spend time on them. If there’s a lion running toward us, we run. If we build a new web application, we use the layered architecture style. We have done it so often in the past that it has become a habit.
I’m not saying that habitual decisions are necessarily bad decisions. Habits are just as good at helping to make a good decision as they are at helping to make a bad one. I’m saying that we’re doing what we’re experienced in. We’re comfortable with what we’ve done in the past, so why should we change anything?
Therefore, the only way to make an educated decision about an architecture style is by having experience in different architecture styles. If you’re unsure about the Hexagonal Architecture style, try it out on a small module of the application that you’re currently building. Get used to the concepts...