Yes, you should. Only douchebags bink their own tournaments.
Seriously though, I'm a little more strict than most when it comes to hosting. Tournaments are one thing, as it is an fun competition with a fixed loss, so you aren't bankrupting your friends. In that case, play your ass off and gun to win.
In a cash game, I do deem it dickish if the host plays like he's trying to bring home a bracelet, especially if it is a social game. I have about 25 people come to my cash game each month, and if I notice someone who is playing super aggro and trying to felt everyone, diminishing the experience for people to the point where they don't return, I do not invite them back. As for myself, I play pretty light. Even if I'm slammed with the deck, I do not try to squeeze every dollar out of my equity.
Congrats on winning! After spending the time to organize the event, I would consider it a nice bonus.