I think the porn industry has done a disservice to most men, they hire tiny men with big dicks. I have a big dick and to be honest it can be painful for some women. I have to be careful, but then anal is more pleasureable to me as I can go deep without fear of hurting them.
I am not sure why they sell that stuff to guys other than our own lack of self esteem. Go with what ya brought to the table and you cant go wrong.