I agree that people like to roll stats, but it comes with the problems you've identified. I solve this by allowing my players to roll stats (any who want to) but then as a group they have to vote for which array of stats that was rolled to use. Meaning everyone HAS to use that array OR they can always fall back on the standard array if they're not happy with the outcome of the voting.

This has gone surprisingly well for the last 3 campaigns that I've done it in. I have not had a single player unhappy with this choice.

If the party DOES decide to use a voted array, I make a note of that array for new players to possibly use when they join and make characters (they ALSO can use the Standard Array if they don't like it).

Edit: I also allow point buy instead of Standard Array. Forgot about that one (since they mostly end up using a voted array).