@JohnB
Do you want to have children? If so, that may restrict the age range you are interested in.
I hate to say it, but I hear/read that a lot of men past a certain age go to the Philippines and find a young Filipina bride. Having lived in Indonesia, I think it is similar, that with the lower economic classes, there is probably a bit of prestige associated with marrying a foreigner. I think it is similar in the Philippines, but probably with a higher economic class, marrying someone a good bit older is probably not prestigious. I'm half guessing. I used to go to a church with a lot of Filipinos, but some of this I am telling you are second-hand opinions from expats I've interacted with. I did see some older expats going around with younger Indonesian wives, but that wasn't as common, and Indonesia is not as much of a dating/wife tourism type destination.
I don't know if the older men with younger women are
all with bar girls and single mothers who have few options in the Philippines, but that seems to be the case with some of the matches. I did meet a white man with an Indonesian wife who met online. As far as looks go, they weren't models. And they were both getting up there in age. He was quite hefty. I don't know about when they met.
I've spent much of my life in Asia, and part of my US time around lots of Asians, so this is what I am familiar with in my life experience. If you like Asian women and could get a job in a country that is a bit more marriage oriented where people might help match you up if you ask, and you develop a social network, that might help a bit. I don't know about men who are over 40, but I could tell a lot of marrying-aged women at church seemed to like me, made an effort to spend a few minutes talking with me before or after church. A couple of them sent presents home to my mom when I went to the US. I was trying to figure that out until an Indonesian told me they might be hoping to soften up a potential mother-in-law, just in case. This was wishful thinking, especially with one of the girls since I hadn't expressed interest.
I was picky in Indonesia, but for Indonesian Christian women, I think they generally make good wives. My wife's people-group do, I think, generally. Her people-group might be a bit outspoken with their opinions, which is unusual for that part of the world. But they tend to be diligent about the home, even if they do work in the office. And the culture is anti-divorce. Divorce rates are lower in a lot of cultures, and there is some shame and stigma attached to it, especially if she got bored or found some other guy and left. (Another place for a 'Bring back the stigma!' campaign. Let's get some t-shirts.
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