Its a legitimate question. I am a Round Earther myself. I too began my visits to this site intrigued. I still am, in a way. But I think you will find that your intrigue, like mine, will gradually fade the more you realise the heights of illogic that are allowed to occur here.But I shan't let spoil it for you. I shall let you see it for yourself.
However, to be perfectly fair to Flat Earthers, as a student of the Bible and other holy texts, many of them, although not intended as science books in the first place, do assume a Flat Earth worldview. The Bible certainly does. The Qur'an does. I am exploring ancient Greek myth now, and it would appear that they did originally, although by the time of Aristotle, that was no longer the case. Most educated persons by about 400 BCE had determined that the Earth was a sphere, although they were still wrong insofar as they thought it was the center of the universe, and the Sun revolved around it, rather than the Sun being the center of our Solar System, with the Earth revolving around it. Of course, we have since learned that the Solar System itself is only one of many, and is NOT the center of the universe itself.
But I digress. The point I am reaching here is that you will be intrigued until such time as you ask more questions, and continue to get more and more bizarre answers, and you begin to realise you are getting the runaround. Then you will know that the FES doesn't have a compelling argument, they just know how to argue, but not logically. They are slick with words, but once you pin them logically, you've got them. I'll continue to observe this thread, and point that out to you. Good luck.