>>534950997
The problem with Endurance is that the XP gain for how long it takes.

It takes about 2 hours to do Stonewood Endurance, 1 to 30. And within that 2 hours, by the time you're done, you've gained 5 levels. So you need a whole day to hit level 50.

There's just faster, better ways to hit that 50 level XP cap than Endurance.