From Merriam-Webster:
py·ro·ma·nia noun \ˌpī-rō-ˈmā-nē-ə, -nyə\
: a mental illness that makes people have a strong desire to set fires

There's a big difference between fascination and and compulsion. I remember loving candles, bonfires, playing with matches. I have never burned anything down or hurt anyone other than once I burned my hand badly on fireworks. If this becomes troublesome, you will need help. Be very, very careful with fire.

You mother is trying to protect you and others. When you get your own place, you can do whatever you want.