Physically its worse than manual masturbation, and much worse than toy masturbation.
Mentally it can be gratifying if you are dependent on other people's emotions. That is, if you need to feel desired, if you need to feel useful by providing pleasure to others, if you need to feel accomplished by peer pressure, like fucking the 'hot' girl.
Liking copulation is having a slave mindset. No wonder it is much more common in third world countries while in advanced ones, like Japan, it has been rejected.
