OK, I've been thinking about this more during some mind sucking meetings...
Price is definitely an issue for a 20 year old. But there's something deeper than usability, versatility, durability and quality.
It's feeling good about yourself. It's about fitting in or it's about not fitting in in a way that says something about yourself to yourself and to others. Like cars, drinks, clothes and many other things in life, the knife choice says something.
I wish I could say that this no longer applies to me, a 50 something. But it does.
I've been on the internet too long. I've concluded that 99% of the stuff said on gear oriented forums (of any sort) are like the worship service of consumerism. As good worshiping consumers seeking self actualization, we recite the liturgy of feature/benefit from memory. "Look at what a clever chap I am. I chose [item name] because it has [feature name] which gives me [benefit name]." Light a candle at the feet of Saint Arthur F. Burns and do our patriotic duty of adding to the GDP by keeping the march of goods moving along the conveyor belt.
I recall watching a TV show on consumerism once. They interviewed all sorts of civic leaders from various backgrounds. One was a preacher who sat casually at a picnic table talking about it from his perspective. Unmentioned was the irony of the sweatshirt he was wearing. It has a big "Spaulding" (the sporting goods manufacturer) logo on it.
One knife? Choose your icon and behold.