Facebook is now 20 years old, and Mark Zuckerberg, then a 19-year-old Harvard undergrad, says he’s still at it, and the best is yet to come. But, it went through a lot, coming out from Harvard’s dorm room to the metaverse. Here’s how the last two decades have been for Zuckerberg and Facebook. While Facebook was started in 2004, its foundation was laid a year ago, in 2003, when Zuckerberg created Facemash, a website that let students rate students’ photos to decide who was “hot” and who was “not.” However, it reportedly did not end well for Zuckerberg, but he…