How do you enjoy playing casters?

[Breakbeat]

In short, idk how to adjust myself to play casters. It's really frustrating especially in group settings when mobs die to someone before you even finish casting. It feels very unrewarding and slow. How should I approach caster job?

A rule of thumb to avoid this situation is not to hard-cast stuff (that is, not to cast spells that take time to go off) when either A) mobs are dying very fast, or B) the tank is pulling groups of mobs out of range. In these cases, use instant spells. There is some decision making and logic that comes into play as well, and lots of variations based on the individual pull.

For example, you might start a normal rotation and then the tank pulls the pack away. Then you gotta convert from stationary to mobile casting.

SMN has lots of instant-cast spells. I have no doubt other ranged jobs have similar instant stuff. Use those when the mob doesn't live long. Practice and practice some more.

In the end, if you don't like the way playing a caster feels, then it's entirely normal for you to not play a caster. Don't force the issue.

Good luck!