Casters are terrifying in theory, far less in practice.
As for play experience...I'm approaching close to 600 hours testing (a three hour game a week for the last 1.5 years and an eight hour game a week for about 9 months, so 3 * 75 (225) + 36 * 8 (288) + 7 single shot PvP tests for 6 hours each (42) is about 550 hours) for both new and old players, two separate groups, and having run a full campaign from 1-18.
Short version: The theory of casters is far more alluring than the reality.
1) Casters are awesome when they cut loose, but the opportunities are rare. Martials tend to be more consistent. Both times I have had a TPK, the casters all wanted to go to martial characters, and the martials were usually convinced to go to casters. (One TPK was at 14th level). They usually have to be careful about how they spend their spells, because they run out very, very quick.
2) At higher levels, Legendary creatures are a PITA. The auto-saves and the legendary actions (and lair actions) end up hitting casters much harder, because they end up having to make physical saves (DC 10 and be knocked back and prone, DC 15 or be restrained, etc) that screw with them.
As for play experience...I'm approaching close to 600 hours testing (a three hour game a week for the last 1.5 years and an eight hour game a week for about 9 months, so 3 * 75 (225) + 36 * 8 (288) + 7 single shot PvP tests for 6 hours each (42) is about 550 hours) for both new and old players, two separate groups, and having run a full campaign from 1-18.
Short version: The theory of casters is far more alluring than the reality.
1) Casters are awesome when they cut loose, but the opportunities are rare. Martials tend to be more consistent. Both times I have had a TPK, the casters all wanted to go to martial characters, and the martials were usually convinced to go to casters. (One TPK was at 14th level). They usually have to be careful about how they spend their spells, because they run out very, very quick.
2) At higher levels, Legendary creatures are a PITA. The auto-saves and the legendary actions (and lair actions) end up hitting casters much harder, because they end up having to make physical saves (DC 10 and be knocked back and prone, DC 15 or be restrained, etc) that screw with them.