First of all, I don't blame any of the developers.. instead I feel very thankful to them. And second if I am not missing something stable roms doesn't lack ANY other functionality than the stock ones right? So nfc absence maybe is the first serious reason for many many people to stop using them...as for the nfc payments I won't mention myself as you do... Just make a poll and see if nfc payments are needed nowadays or not... Because if you dissagree then I am sure you could use a Nokia 6110 without the need of any android phone...
(just teasing you).. thanks
P.S. please ignore all of my comments of course if the only reason of a custom rom existence is the stability and only...