It's not even that it's easy to forget, it's that it's annoying. More bulk in my pocket, and now if I want to switch from my phone to my computer I've got to unplug two things instead of one.

No, I don't consider bluetooth to be a great solution, either. I've got more than enough individual things to worry about keeping charged already. It's like the electrical outlet is trying to give birth to a damn squid every evening.