Roll. The. Dice.
In our 1e-based game we use 5d6, drop two, rearrange to suit. Truly sucky characters are rare; truly outlandish ones just as rare, and we find their life expectancy doesn't seem to be all that closely tied to stats in any case.
In our 3e-based game, using 4d6 re-roll any single die once only then rearrange, my first two characters had wildly different rolled stats:
Gloramir - 18,16,15,13,12,12 (Fighter-Wizard)
Appppil - 15,12,11,10,10,7 (Illusionist)
Gloramir died a few adventures in, was brought back, repeated the same cycle, and has bounced in and out of the party since; not accomplishing very much. Appppil is still going, 5.5 years and 10 levels later...and under most point-buy systems, could not even exist! The 7 went to Wisdom, and that defined her entire character...
Just goes to show, stats don't make the character.
Lanefan