What am I?

by Sam
(England)

Every day I sit and stare
Wondering what I'll do and where
Dentists hate me, children don't
Parents won't buy me, they won't, won't won't

I become a price
But I still taste nice
Don't eat me too often
If I get too warm, I'll soften.

I'm a treat
You guessed it, I'm a sweet!