When you look back, what do you see?
Number of days since you were born.
Number of hours spent burning midnight oil to get that extra marks.
Number of degrees and promotions.
Number of weeks spent fretting over the fact that your batchmate has more numbers on his monthly paycheck.
Would a life lived quantitatively mean a better life?
Side Note: There must be a very good reason why quality is a part of ‘qualitatively.’
CachedIdeas - Ideas on the Go! 
In fact, qualititatively is a word derived from quality. I mean quantity -> quantitatively, quality -> qualitatively.