I am not sure that I would remember how many seats are between me and the two nearest exits although I do take note when I board.
Regarding ditching I think the forward and overwing exits are the one to use mostly in most narrowbodies aircraft I pax on.
I do look very carefully the safety demo for a simple reason: I feel that the day I have not paid attention it will be the day that the knowledge will be useful and critical. No if some one does not pay attention he/she is Darwin award candidate.
Rwy in Sight