I've used cash for many years as being in the UK I don't have a US bank account and the charges to accept a US cheque are very high into a UK bank account (and way above what most of my sales are for ).

Ebay's rules about not accepting cash are a real pain for me, although I find many people still accept cash from me although I always promise to guarantee the payment arriving - so far I have never had cash sent go missing and only one small sale payment not arrive with me. Paypal works for me, although not everyone uses/accepts Paypal still.

Jason