Cheap. Good food at mind-bogglingly low prices in the rural provinces (2 nice brunches for 120฿ - would be at least 10 times more than that in Oz). Owning & running a motor vehicle 60% of Oz costs.
Lots of nice people in the rural provinces. Different culture - slow, collectively organised at extended family level so keeps the problem individuals under control (mostly). Traditional, old-fashioned courtesy including to well-behaved Falangs. Kind & generous to people in trouble, including the dying. A feeling of continuity, away from the disruption & stress of the Western world's modernity.
To spend my last years - leading, as my Oz friends laughingly tell me, a First World existence in the midst of the Third World - is a privilege I value greatly. No wish to return to Oz or even visit there any more.