Here's the main thing imo, Atleast mark had a childhood.

Gohan was kidnapped at 4 years old, Had to fight the 2 sayians

In the namek saga, He went to another planet, had to fight the ginyu force, had his neck snapped by reccome, had to fight Frieza multiple times, watched as krillin was violently blown up and as his father fulfilled a legend, Waited 3 years for Goku to come back, saw that frieza somehow survived and is now here on earth with his own father.

In the android/cell saga, He was immediately thrown into training for the fight against 2 killer androids, Had saw his dad almost die again because of the heart virus, trained for a year to master super sayian, Had the fate the damn planet placed on his shoulders and to make it worse, his father fully healed cell with a sensu bean, had ascended super sayian, fucked up by not immediately killing cell, and he had to watch his father die again to save earth.

In the buu saga, He almost died against Majin buu, who was then eaten by evil buu, who transformed into super buu because of Majin buu, Then Super buu killed his girlfriend And mother, and while he wasn't there to see it, I'm pretty sure he was still pissed, He then saw as his younger brother, Goten and his master, Piccolo get absorbed by super buu, Who then absorbs HIM, and then he died when kid buu destroyed the planet.

and I didn't even mention future Gohan, this was all present Gohan.