I hate Bixby because I never use it, I disabled it. They kinda messed that one up on the S8 with the position of the button, it would always get tapped, or bumped and cause Bixby to pop up.
Had the hardware implementation been better on the S8/+ it would've fared better. Now everyone hates it because it started off "in the way". But it's actually pretty smart, and the most advanced of the AI's. But alas, I'll likely never use it because it annoyed me to no end with the button placement.