Sorry, I have to agree with Mormanth.
IMHO of course
I seldom roll well when rolling up a character, and I have played with an occasional person that seems to always roll well.
Even on the times I got lucky and rolled really well and maybe ended up with higher stats, there still is an imbalance between a high roller's stats and the unfortunate rolls of someone that has the dice turn against them.
Point buy allows everyone to start with the same potential, and if you decide not to max out your stats potential compared to another player that is fine. You still have the same number of stat points and it was your decision to make the character that way.
Also, when rolling stats it is my experience that there is still a form of mini-maxing going on. You roll the stats and then still have to decide how to get the most out of the stats you rolled up... Putting the highest rolls where it does the most good and the lowest where it does the least harm.
That said though...I do have to say that rolling your PCs stats does allow more potential to have some unusual flavor for your pc. The fall of the dice can help you determine what your pc is like. You may decide that they are weak, dumb, fat, thin, ugly, hot tempered, self conscious, brilliant, nimble, clumsy, had a bad childhood or some rare illness that affected their abilites-
all on the fall of the dice.
So rolling Can help with the Role play process and pc concept before you even start.
But if you know what you want to play and how, and you want to the group to be on even ground, I prefer the point buy.
As said all IMHO of course!