For me, the trigger for my life-long love of fairytales comes from The Reader's Digest Collection of Fairytales which came in two volumes. Both are hefty hardbacks and you wouldn't want to drop them on your foot! I loved the stories and beautiful illustrations. These books were given to me by my late parents. I still have the books. The spine on Volume 1 in particular has been bound up by tape! I'm probably going to leave the building long before these books do!
The stories are those collected by Perrault, the Brothers Grimm, as well as originals by Hans Christen Andersen etc. I remember the shock at discovering fairytales didn't necessarily have to have happy endings when I first read The Little Mermaid.
My favourite overall fairytale is Cinderella. Mind, my first published story was A Helping Hand in Bridge House Publishing's Alternative Renditions anthology. I look at the Cinderella story from the viewpoint of the younger stepsister who is not best pleased with the fairy godmother turns up again. Great fun to write and, being my first published story, it will always have a special place in my heart. I still love writing fairytales from different viewpoints. It's good fun!
Looking at why you love stories can help inspire you write your own (and do so better!).