Like so many other things, 'favorite travel destinations' change as you go through life. Not just because you have more exposure to other places (which one does of course) but as we go through life our perspective changes.
In my mid/late 20's Hawaii was my favorite travel destination (had a condo on Maui and traveled there a few times a year)
In my mid 30's - early 40's I lived in Europe I loved skiing in St-Anton, Austria and 3-Vallie, France in the Winter and hiking/mountain climbing in the Alps in the Summer. Italy (especially the Dolomites and Tuscany were incredible regular destinations.
Since relocating back to Montreal I've loved rediscovering Canada. The Charlevoix region is incredible and I and want to get back over to the Atlantic regions (Halifax, Sept Illes, etc)Lobster traps, Oysters and loads of other seafood. Yum! Putzing through little fishing villages and hiking along the coast. Nice!
The older I get the more I love the simpler things.