We have all heard the horror stories of lonely men being take advantage of and worse.
No one is forcing anyone to do it this way, or is it suitable for everyones situation, but it does provide some protection particularly for the inheritance of existing children outside Thailand.
Some people may just do this till they are sure the relationship is genuine and will last.
Also does not leave you exposed to the whims of the last military dictators change of rules. Seeing as they have a new one every 3 years or so.
By all means provide her with a better life but don’t temp her and her family with wealth that will be theirs when you die.
not suitable to every situation but you can still make arrangements for after your death in your Will. But what it does is protects you and your assets from a relationship breakdown and the ever changing Thai political environment.