I'm an old man in a middle-aged man's body. I've been playing tabletop RPG's for over two decades now and still seek out more creative and fun adventures. I confidently DM D&D 3.5 and 5e, Starfinder, Pathfinder 1 & 2, Fantasy Flight's Star Wars, and Vampire the Masquerade. I'll happily play just about any system that has that good balance of mechanics set in for consistency, but not so structured to be abused without a good GM/DM's guidance.
I'm a very easy going veteran and clearly never tired of being amused by how humans react when there is a door in front of them. I'm totally not a robot. People are best when working together to problem solve and learning about themselves in the process. Communication is key.