Hm. I seem to remember a little of this attitude in the game I played back in high school (AD&D2e with oodles of house rules, being played by adolescent boys); like Henry said, the rules back then really did leave magic users with a very limited number of spells and not much for them to do once those spells were gone. Also, the style of the game generally had anywhere from three to six consecutive combats with no opportunities to rest and re-memorize, so husbanding your limited spell resources was
essential.
I wouldn't say that it was better--oh god, I would never say that--it was just the way things were. Fortunately, with sorcerors and bonus spells for high attributes and (in the games I've played in, at least) less emphasis on one-fight-after-another gameplay, the days when wizards had to be obsessively preoccupied with "wasting" spells are over. If you want to play a character who takes genuine pleasure in showing off all the cool things that spells can do, you can, and in many campaigns it will be as tactically valid an option as spell-hoarding.
There are still some things smart wizards shouldn't do, of course. They shouldn't blow big, powerful spells on spindly, weak opponents. They shouldn't waste a spell on something that one of the other people in the party is going to take down in one round or less. They shouldn't cast a spell at nothing. But that's the same kind of thinking behind archers only using their magic arrows against piddly little critters when a normal arrow works just as well, not a blanket condemnation of casting spells semi-whimsically.
I laughed at JoeBlank's description of his sorceror, because I had the same goal (to never have spells left at the end of the day) when I was playing a wizard in our last game. Once you pass a certain level, it's harder than it sounds; I think the breakpoint for me came somewhere around 7th or 8th level. I went from being able to empty my entire spell rack on an average day to having at least three spells left even after a really difficult day's work. Sometimes I'd even have big-ticket, high-level spells left, just because I never got the opportunity to use them, and I'd actually be
hoping for a late-night ambush on the camp just to have the chance to unleash 'em.
It was fun (more fun for me than running a spellcaster was in my high school game, to be certain), and I highly recommend it.
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hoarding is cool, but using is better
ryan