have you ever had a random statline create a character
Our groups, as well, have mostly moved to point-buy because sometimes someone would end up with abysmal stats. Or we had one fellow who had utterly uncanny luck with rolling stats. We tested him with his dice, our dice, even one time buying brand new dice from the gaming store we were at, closely watching him (he was not a professional gambler, nor had any special rolling tricks), and no matter what he always rolled a truly abnormal amount of 18s. His dice luck elsewhere in the game was utterly average, it was just his character stat generation that was weirdly lucky.
There's no doubt that an interesting random stat array can make for fascinating storytelling, and as long as everyone is cool with that, there's no problem. But when someone else up with a blatant disadvantage, that can get less fun for all involved.