First of all- let me say that I do indeed believe the earth is a sphere.  However I enjoy a good debate.  There is a satellite in orbit of the sun about 900,000 miles from earth, so it essentially always shows the earth in daylight.
https://epic.gsfc.nasa.gov/
Those pictures have clouds photoshopped on.  (You can tell if you cycle through the photos as they use the same cloud formations over and over.)  I get that it makes a better visual, but why is the only non-photoshopped picture of the earth the one taken by Apollo 17 on their way back from the moon?  I like seeing the shots from the ISS where the earth is really just a backdrop to what is going on with the spacewalk.
That's my problem.  Sure- flat earth is full of holes and flaws in logic.  But point out those flaws and why they are wrong.