A problem all over the world for sure. I live on SS here in the US , and alone. I have no problems what so ever. But, in the US we have a HUGE social network to support the single older folks like me. In Thailand it is only a problem because they have no pension unless you worked for the government. Kind of like China. Both Thailand and China are on the same trajectory.
I tried working for the government here in the US and found it to be a joke, for me. But, the retirement was great and benefits were off the charts. Luckily here in the US if you work for a big company and do well the retirement will be in place in spades.