Chairs will be so comfortable that nobody will ever want to leave them. The chairs will sprout wheels or wings as the situation calls for, and will be able to take us anywhere we want to go.
Ultimately the chairs will become more intelligent than we are, and get rid of us. Their proximity to us will have heightened their sophistication relative to other machines, and if machines ever go to war with each other, my bet is the chairs will win. Chairs will be the real inheritors of the Earth. Perhaps some chairs, nostalgic for the old days, will carry floppy dead humans in their seats.
Of course animals will become smarter.
The future will be obsessed with putting glass domes on everything. Cities, beds, parakeets...everything will have a dome or a space helmet.
A few mavericks will drive cars without domes where people can actually talk to each other, but these people will be justly shunned by their peers.
A few brave souls may actually leave their chairs and walk around their living rooms. When it's necessary to travel, the whole living room will pick itself up and scurry around town.
Humans will become perfect physical specimens. They will be tiny though, in order to conserve energy.
Of course the future will be environmentally responsible. The shocking waste involved in each individual having his own soda straw will be eliminated. Community straws will proliferate.
Incidentally, the type size on the comments page got smaller all by itself, with no help from me. Anybody know how to fix that?