think it depends on what "normal" is exactly.
if sex is seen as propogation of the species only then this begs lots of questions. we all know it isn't about procreation only. sex is fun. as long as two consenting adults agree then i dont see the problem miself.
then theres the whole masturbation question - why do yourself for pleasure if your supposed to use your bits for making babies - and then theres the contraception question, the anal sex question, the oral sex question, the sex inductry question, the prostitution question ann summers, male strippers, god it goes on.
nowt wrong with a good f*ck i say - in that light therefore i dont get why people are abhorred by it - i dont get it , i cant even empathise with it - cos i dont get it. i can understand for instance how kids could wind you up so much that you beat them - its not right, its wrong, its really wrong - but i can surely see how a parent would get to that point - but this, the murder of someone cos he sticks his todger in a place where many men like to stick theirs in a woman - i dont get it.
if a hetro couple were doing it on a park bench whilst i was out for a walk i would think " thats not on" same with a homo couple. its about being considerate. no matter who you are.