Funnily enough I often get an exit seat boarding last. I notice the cabin crew plonk themselves in the exit rows to keep people out. Get on last, give them a big smile, and you often get ordered into them! Aren't they pricing them extra? Every time I get on early, some gross specimen of humanity with a unique attribute- odour or size or 'alcohol a speciality' or carrying a squawking baby with a runny nose that will go right next to me, or a tantrumy infant- comes bang into the seat beside me. How nice to wonder through the cabin avoiding rowing couples, screaming children, drunkards, people spilling over into the next seat etc.