Here is my 2c.
Dacron, well made and specified will complete
a RTW, if looked after. So will Laminate, with the same provisos.
My experience (with Norths laminates) is that after about 40,000 miles, and multiple years in the tropics, they are now in need of replacement. However, during that time they have been lighter, and held their shape better than a Dacron equivalent. That means more efficient sailing, at less heel, with less sail, for the equivalent drive. So they are better, but cost more.
I'll be replacing them with laminates again, and hope/expect to see another 40,000 miles! :-)
Norths have been good to me, and have service
centres in most sailing locations. NOT all their sails are made in Sri Lanka.