For me (like most people) it gives me something to do, and im also living out a childhood dream.
I have loved robots since i was 3, and was the only thing i could talk about! (my teachers got a bit annoyed when i kept on answering Hypno-Disc to their questions :P)
And now that im in my teens, i often find myself bored, but thinking up new designs for robots, looking up parts and making them has become a hobby i absolutely love doing.
It also means i get to travel quite a bit - if i wasnt doing this then i probably would of never of gone to see an Air Tattoo in Fairford or even gone near Guildford!
Winning is nice but i just love driving my robots around and being able to entertain people with whatever i build (say Alejandro + swimming noodle for example :P)
I also love the fact i can express my creativity on my robots :P (you should all see what i have in mind for Teeth lol)