Is it normal to like knives?
Depends.It depends
Yes—liking knives as tools, collectibles, or objects with interesting designs is pretty normal. What matters is whether the interest comes with urges or plans to hurt someone.
Lots of people appreciate knives for cooking, crafting, outdoor activities, collecting, or just their design. That interest by itself doesn’t mean you’re violent or that anything is wrong with you.
If by “like knives” you mean you’re having urges to use one to hurt yourself or someone else, that’s different: put some distance between yourself and the knives and tell someone you trust. If anyone may be in immediate danger, contact emergency help now.