Like many of my peers, I cut my teeth on Dungeons and Dragons. The first edition I played was 2nd, though we used a lot of Basic stuff too (especially monsters).
Twenty or so years later, I'm still playing D&D. I've played every edition, many retro clones, and variations. I don't care if the cover says Dungeons and Dragons, Dungeon Crawl Classics, Pathfinder, or Swords & Wizardry... It's all D&D to me.