I think the problem was the satin. Binding can be a PITA but so is satin. Mix them together and ugh. I don't mind binding so much, other than it's tedious but not really portable, but I cringe just thinking about doing it in satin.
This quilt looks like fun, either way though. As long as it's functional. I love the quilting. I still don't do that on my machine, even just for wonky stripes like this. (the wonkiness adds loveliness, btw!)