Why anyone would want to introduce modal editing into Emacs will always remain a mystery to me.
I don't feel crippled, by the way. But since I like keeping an open mind, if you have any actual arguments, please feel free to share.
In the mean time, if you're also open, I recommend checking out some counter arguments, for instance in the work of Larry Tessler.
But I don't think modal/modeless is either/or. It can be (and I personally use) both.
My editing habits are too deeply ingrained. Past attempts to switch all failed.
Instead I'll probably just use the good ideas from this package and adapt them to my own config. That's why I use emacs.
[citation needed]