Early on, you just want to level up and get powerful fast… Smirk gives you a nice EXP boost for a crit kill. You won’t always be getting crits, but when you do you’ll get a bunch of EXP from it. Much so if you really take your time during boss fights or just big juicy enemies.
Edit Crap, posted this on the wrong one. A little help? This was suppose to be on the Mordecai thread.