Short Lucid dream and a quick question

This was my 4th lucid dream. It was short. I was in this house and there was this dog doing all these weird tricks. I, out of the blue, did the nose reality check and was aware that I was dreaming. So when I did that, I went outside into the backyard and tried to shoot an energy blast. It failed. So then I decided I wanted to fly but then fear overcame because I thought I might fall out of the sky :P. I wanted to go outside the front door and run around but then the dream ended. It was an awesome feeling.
This is my question. I had this LD out of the blue..I wasn't thinking about lucid dreaming that much nor had I done any reality checks on a frequent basis ( just a randon one here and there. ) At one point a few months ago I was trying very hard to have one but I never had one but NOW when I barely do anything to have one..I friggin' have one! So why was this so out of the blue? Thanks for reading.

What you just explained happens to me all the time, and I would imagine that it happens to other LDers as well. I don't think that there's any very good explanation as to why this happens, all I know is that you should still do the techniques if you expect to have lucid dreams. There might be times where you can get by with having a lucid dream without doing any of the techniques, but don't think that that means that you don't need those techniques.

Dude same thing happened to me today cept it was my first LD experience and i had 4 in a row.

Like 6 months back i was heavy into researching LD's trying different strategies, reading, keeping a dream journal, doing reality checks, etc. And i got nothing. Then today when i took a nap it just happened all of the sudden...