I would argue that it isn't what high level martials get to do.
Let's compare the same fighter at different levels.
Let's assume this fighter rolled an 18 and therefore starts with 20 STR (if you'd rather, we could instead assume a 6th level fighter that used the array and put their ASIs into STR).
At 20th level this fighter also has a 20 STR.
The 1st level fighter can lift 600 lbs. The 20th level fighter can also lift 600 lbs.
The 1st level fighter can make a running jump of 20 ft. The 20th level fighter can make a running jump of 20 ft.
Of course, the DM can allow the fighter to exceed those limits with an athletics check! Well, the 1st level fighter has an athletics bonus of +7, while the 20th level fighter has a whopping +11.
The 20th level fighter can take more damage than the 1st level fighter, and can deal more damage than the 1st level fighter. Not Kratos levels of damage, IMO (admittedly, I haven't played the games, though I have watched some gameplay). That's about it.