Monday's Riddle! A Monstrous Height?

Hello Riddlers! It's that time again. Can you guess our theme this week? I always thought they were nice, despite how they're often written in. ; ) ~ F

I'm rather tall, and known to be large. I'm as big as a house or even a barge. In my story, I'm told to be scary; sometimes called monster or ugly and hairy. Once, there was a man named Jack, who took my prize away in his sack. Another time, there were tiny people, who poked and prodded, then tied me to a steeple. But, I can be helpful! Just ask a Bumble. When something's high up, I won't stumble. I'm very merry, and I like to have fun. I can fill the space only as one. No need to worry about being eaten- I've lost the taste for those that I've beaten. I'm in your dreams and the stories you hear- and, though I'm enormous, there's nothing to fear. 

What am I?

I gave you a clue!

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