It's strange, my new quilting habit. For one thing, it keeps pulling me away from my more pressing and urgent habits. I have a niece coming in October and I'm still a skein away from finishing her baby afghan, and I haven't even started her Xmas stocking yet! But also, while it is the one thing I really just don't care if I get right, I totally judge other people's quilts! I google pictures of quilts and it turns out I have really specific taste in quilts.
I don't like borders. People piece together a crib quilt, add a ton of borders to it, and then say they made a double bed quilt. No you didn't! It's all filler!
Same with sashing. In the right quilt it can look good. If you make it too wide you just look like you stuck postage stamps to a sheet of printer paper. More filler. It's practically cheating.
I also don't really care for it when a quilt top is all pieced and then the person quilts it with really dark thread that overpowers the fabrics, but that's more of a preference than an actual dislike.