I impulse buy things more than i need to. Food mostly, but I've been known to splurge on video games and books as well. I have to keep myself entertained.
I impulse bought Fallout 4. I liked Fallout 3 and Skyrim, so another Bethesda game seemed like an acceptable risk despite it being too shooter-focused for my liking. I like it enough to have sunk almost 200 hours into it despite my qualms.