Couches? As in multiple? As a poor student?I do have one old couch.
But how's that related? Tablets are really un-ergonomic, my wrists don't like it when poking one for more than half an hour. I don't really appreciate touch UIs either, due to their nature they are forced to insert lag (is this a single or double tap? Maybe a gesture?); my fingers aren't invisible; smudges, etc etc.
(I do have a couple Android tablets, so speaking from experience)