Will- I wouldn't call it struggling, I would call it realizing I do not want to spend the extra care on those plants for the following reasons:
Ivies = Spider mites. I have many houseplants, and have decided that certain plants take priority over others. Anything that is a bug magnet, goes.
Wandering Jew= Always ends up leggy no matter how much light is provided indoors.
Croton= Should be in humid southern environment, and will complain if it's not.
I wish I had a greenhouse, then I could keep those plants happy, but I do not. Cheryl- I agree about croton being picky!!! Good for you for sticking with it!