Celebrim said:
I'm a historical military buff, so fireball's presense causes me more psychological grief than 'raise dead'.
In general, I share your grief, but I've found solutions for this one that personally make me pretty comfortable. Granted that fireballs look a lot like cannon-fire on a battlefield (per Gygax in Chainmail):
(1) Mass troops tactics really did survive the existence of cannon for hundreds of years, depending on how you count it. At least from 12th Century through Civil War to WWI. I figure it's also the analog to Greek Fire in ancient times.
(2) Wizards are less mass-producible than firearms. They have to personally put themselves on the front line at great personal risk. That allows the campaign to say that they're too rare or too disagreeable to regularly appear on battlefields, or in numbers.
(3) There are also some magical counters that can be emphasized to greater or lesser extents, like Counterspelling or a
rod of flame extinguishing.
(4) In addition, it's possible that
fireball is not so common a spell as to be in every wizard's spellbook.
I find that wizard-spell problems can generally be massaged by tweaking the frequency of wizards or the particular spell in the campaign. It's a much more cutting problem for cleric-spells where (a) every known church in the world is full of clerics, (b) every cleric has access to every possible spell, and (c) the spell is generally applied within a safe sanctuary, at no risk to the cleric in question.
As time goes on, clerics bug me more and more in comparison to any other class.