I know several people who expressed a wish not to have a funeral. Sometimes this wish stems from a desire not to be an inconvenience, or a sense of guilt or shame that one's life was not well-lived. Sometimes, simply the view that funerals don't matter, so why bother.
In every case, I think this desire is mistaken. The need to mourn the dead is an instinct older than our species itself, and in dismissing it we wound the people closest to us.
If you're the sort of person to whom the idea of skipping your own funeral sounds tempting, I kindly ask you for the sake of your loved ones that you reconsider.