Playing in a party with just casters is a fun time.

Our entire party can deal room-wiping damage in a turn or two.

Our entire party goes down in like two or three hits.

The tankiest party member is a Magus, and even he hardly pulls tank numbers.

All of us are constantly cowed by friendly fire being a constant threat.

Our party’s main healer is a raging atheist and has a feat that says that if any divine healing spells are used on someone, he can’t attempt surgery on them for 24 hours, much to the chagrin of our party’s SECONDARY healer (though mostly a DPS) who is a divine caster.

Every combat is hectic and I love it.

The spellcaster can deal a monumental amount of damage in a single spell, enough to wipe out a martial fighter in only a few turns. The martial fighter can deal multiple modest hits each round, enough to wipe out a spellcaster in only a few turns. Clearly, the winner is the trickster who pitted them against each other and hid, only coming out after a few turns had passed so they could stab the survivor.