I've had lucid dreams since I was really young. It stems from when I would have really terrifying nightmares. My natural reaction was to take control so I could fight and my skills grew from there. Most of my dreams are now lucid and I have a great time! The power to reorganise 'reality' is addictive; imagine being a proper Neo. I often have repetitive dreams too and they're the ones I like changing the most; exploring different choices, adjusting the world for specific effects, making others the protagonist and watching the results... my imagination is the only barrier and I'm lucky that I have quite the imagination. One of my friends once commented that they would love to plug my brain in to a TV so they could see what the hell was going on.
Sum ergo sum