FFVIII had the character<->monster growth a bit imbalanced. Monster growth was usually high, more so with the big named monsters you'd run into. Your characters had very low growth and stats were determined by your magic junctions, which for that system made casting some magic useless.

Omega's got a point with marmot drops, if bite bugs weren't much harder to kill at 99 (actually FFVIII went to 100, but 99 is the common example) compared with everything else then you'd expect marmots to be the same. And since we can always change jobs, we'll still have a use for the weaker monsters for a while to come.