Is it normal to like needles?
Depends.It depends
It can be normal to find needles interesting or even enjoy things like tattoos or piercings. What matters is what “like” means to you—and keeping any needle use safe.
People have very different reactions to needles: some are fascinated by them or like the idea of tattoos and piercings, while others would rather not see one. If you mean an adult sexual interest, that can be part of someone’s private preferences too; it doesn’t automatically mean anything is wrong with you.
The important line is safety. Don’t use needles on yourself or others outside appropriate medical care or professional piercing and tattoo settings, and don’t let curiosity turn into injury.