Rolling for the win, because that's how our fore-bearers did it. And it was wise and we saw the truth in how they did it.
We usually roll 7 times 4D6, ditch the lowest score and ignore a 3 or 4.
I'm in the minority that would rather have rolling, if possible.
My players would all rather have point buy.
At this point, why not just go with about a 34 point buy. Because, dollars to donuts, that's what you're going to get.
Point buy
But theres no reason not to include both in the book.
Also would like to see some common arrays already made, like 4e had.
I did not write IMHO because the populace who quit the last iteration where rolling is not possible because it's not "balanced", do not "get it". Life is not fair. Some people are born both dumb and weak.
Without dice, it isn't randomized storytelling, but just storytelling. With point buy, from the very outset you are already placing narrative expectations on the game that assumes you will be born this way or that, and you can achieve this or that mathematically if you attack this many orcs you will survive X rounds, given these stats. Let the dice decide. They are the true gods of D&D.
Give them their power back. Let them decide.
At this point, why not just go with about a 34 point buy. Because, dollars to donuts, that's what you're going to get.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.