There many reasons, I'm sure, ranging from the overused standard "because I can't not write" to complex and in depth piles of dirt which I don't feel like digging up right now.
So instead, let's look into past dreams, before this one came into being. When I was very young, I went through what I now think of as very normal stages of things I wanted to become: marine, CIA operative, cowboy, knight, hobbit, Robin Hood-wizard-time traveler... The list goes on. Obviously I couldn't be all of those things. Heck, just being more than one would be very difficult. And seeing as, at seven, my acting chops weren't very developed, the only thing for me was to start writing.
Really though, that's not it at all. No, I write because I enjoy it. Do I need anymore reason than that? Do any of us need more reason?
God has blessed me with the triple joys of movement, writing, and baking. Between the three of them, I'm pretty sure I don't have much sanity left, but I do have fun. I'm not saying it's all rainbows and ponies, but what is the darkness except something for light to shine in.
Search for your talents, and when you find them, hold fast.
Have a very blessed day, and don't forget to have fun,
M. S.