I had fired up BL2 on launch day, felt a bit 'meh' about it, and hadn't looked at it since. I started playing it a bit again last night, and suddenly I'm hooked. I even find myself not caring at all about the checkpoint system because it just gives me another excuse to kill stuff and find loot.
I'm already in love with my turret. I really want to see what it can do with rocket launchers bolted on....