Latinas:
Costa Rica - Its glory days are over. Although the women can still be had, San Jose is a crime ridden shithole, the Del Rey is crumbling, and a lot of the other places have closed down. Jaco is on the water but not much going on there. Tamarindo is a nice beach town, so I’d only recommend CR if you like surfing and want to wife up one local to feed and F you consistently. Things could be worse, but it’ll be a slow daily life.
Colombia - Much more attractive women than CR, but the downside is that English is much less prevalent. You’ll have a hard time daily if you don’t speak at least high school level English. Medellin is a fun city to check out, and Cartagena is a great beach town. Worth a visit, but much more enjoyable if you can convince a buddy that knows Spanish and will have your back during the trip.
Dominican - Sousa was party central for years, but I believe the town is starting to crack down on the blatant prostitution that was happening. It’s a dirt road down with meager accommodations, but the beach is great, diving is ok, and women are only there for one reason so they’re eager to please. Women tend to be darker skin that CR and Colombia, and it’s closer to the east coast so there will be dozens of guys from NY and Miami there partying at any given time, don’t need any Spanish at all.
Asians:
China - Avoid like the plague.
Korea - Lot of fun to be had in Korea, but my opinion is if you want hit Korean women you can just go to midtown. Expensive place, and I’d be overwhelmed living there.
Thailand - Beautiful country. Bangkok is a good first stop, but worth settling down somewhere more enjoyable. Pattaya is the most famous mongering town so I’d avoid that too. Plenty of awesome beach towns and islands to choose from, and plenty of girls. Great cost of living, and enough expats to keep you sane. I have heard great things about Vietnam being cheaper and the “new” Thailand but haven’t been personally.
Europe:
Germany - Everyone is aware of their legendary FKK clubs which are like day spas mixed with brothels. Sure that’s great, but Germany isn’t know for warmth in climate or personality. Very expensive, no better bang for your buck than the US. Most of the girls in those places will be Russian, Ukrainian, or Czech. Follow the trail to one of those places to get to the source.
Just my personal opinions. I suggest you enjoy your new retirement privileges and take 1 month long stays in multiple places to feel them out and come to your own conclusions. Just don’t fall in love until you see them all.