Good point, not many Thai's are retired and they would be much older. That means if they are not working they are going to want money from you at some point.
On the other hand, if you're dating someone who is working, you're going to be alone (or working yourself) a lot of the time anyway.
The lifestyles and interests are fairly different between those two things. So you could be retired and dating working women but there may not be much in common. For example, you're sitting around the pool with beers when she gets off work and may not want to hear about her day at work. Or, when you goto a dinner party and people ask what you do you tell them I sit by the pool and drink all day and they all sneer at you.