I'm an astronomer, and have wanted to be one since I was younger than I can remember. No idea why that appealed to me at such a young age...apparently I got a hold of a science book and it captivated me somehow. I spent the next years jumping through the hoops at school (while also playing baseball and being the swim team captain), all the while angling to get to grad school and onwards to the PhD degree necessary to get into the field. I had plenty of fun along the way, but I'm one of those people who knew what they wanted all along and stayed dedicated enough to drive and get it.
After all the schooling was done, I landed a real job as an astronomer in Pasadena...and while that is invigorating and fulfilling, it's nice to share life outside of that. I have plenty of friends that I hang out with on a regular basis, but it's nice to have someone to share things with much more closely (as you know since you're probably interested in the same thing or else you wouldn't be on this site). I tend to be pretty easy to get along with, and I like meeting new people and seeing what they have to say about the world and how they live their lives in it. So, I see this as another opportunity to meet people, and if something more permanent comes of it then that's just a bonus.