Can't really say how shocked I am to hear about this.
To be honest, I didn't like "I Will Always Love You" but I'm sure everyone else will say that that song was (and always will be) the best Whitney song ever.
At a young age, I often listened to the Bodyguard soundtrack which featured a lot of songs by Whitney, which isn't surprising since she starred in that movie.
You are one of the best singers in the world and you will be missed greatly by everyone.