First of I'm a fan of the work of the creator of Home Assistant and the community, but it begs the question why it was built in such a way that it can not be comfortably hosted on something like a Raspberry Pi 2. Resource consumption seems to be not much of a concern. Maybe it is me, but I really feel like languages like Python are not good for this world and we're moving from efficient software to less efficient software on more and more fronts.