Arrogant, Immature Trolling Ass Wipe
There are. It's based on a series of light novels with at least three more seasons worth of content available. Season 3 would likely be Phantom Bullet based on the Gun Gale Online (GGO) arc, which takes place in sort of a post-apocalyptic MMOFPS sort of game. It's a hell of a lot better than the second season, but has it's own, unique flaws.
After that there's still UnderWorld which could easily be 2+ seasons worth of content, Mother's Rosario based back in Aincrad and the best arc in my opinion since it's primarily focused on Asuna having her own little adventure, and some side story stuff that could be turned into OVAs probably.