When you're smoking weed out of a bong the more it defuses the more terpenes are lost. Terpenes=flavor. Plus every time you hit a bong you have to torch it which leads to some hits tasting like butane through out a session. Papers you only light once and the good papers tastes close to nothing.
Papers don't hit as hard though imo.
Bongs allows you to stretch the loud longer than Papers do. Just 1/4 a gram of loud in a bong/pipe would have you like ...while on the other hand, you have to at least put 1/2 a gram in papers to get the same buzz.
Nothing is more natural/cleaner than blazing out of a bong or pipe imo.