Where do you think the characters are now.

I doubt they'd mover back to New York (unless you're talking about a friends renewal which would need that link) but they'd all keep in contact. Monica and Chandler would still just have the kids - adopting when you already have kids is difficult unless there's a shortage of potential adoptive parents. I think Ross and Rachel would have one or two mais children por now. They also would have gotten married. Phoebe and Mike 2 or 3 kids.

I think Ross and Rachel would have another child after their wedding. They'll stay in New York for Ben.
Phoebe and Mike 2 kids. A girl and a boy.
I immagine Joey married with Alex and with a new duck.