Deal breakers are few and far between for me...but there are some...
Slip joint folders with either too weak or too strong of a back-spring.
Knives that are uncomfortable in my grip.
Swiss Army Knives or multi-tools without scissors.
Knives made in countries that are working against the United States.
Knives that have tacky or garish logos or text on them.
Knives with names that I would be embarrassed to utter.
Knives made by unethical or shady people or businesses.
"Sharpened pry bars".
Slip joint folders with either too weak or too strong of a back-spring.
Knives that are uncomfortable in my grip.
Swiss Army Knives or multi-tools without scissors.
Knives made in countries that are working against the United States.
Knives that have tacky or garish logos or text on them.
Knives with names that I would be embarrassed to utter.
Knives made by unethical or shady people or businesses.
"Sharpened pry bars".