Well, if this conversation is about cordless tools, ten I want to say that I love my electric lawn mower. It seems to be as powerful as the Honda gas mower it replaced, but is quieter, light in weight, and obviously requires much less maintenance. If this isn't the future, then I'm not sure I want to go there.
As for mandating replaceable batteries in phones and similar, I recognize that moving forward lithium ion batteries will be a big problem that needs to be dealt with, both in terms of manufacturing and recycling. If the mandate is intended to help handle and recycle used batteries, then I am all for it, at least in concept. On the other hand, if the mandate is about adding a convenience feature then I am less enthusiastic.