But last month murder visited his community.
An attack on his people, allegedly by Muslim Rohingya militants, was the catalyst for the worst round of fighting the region has ever seen, forcing them to flee death, arson and suspicion.
San Tun says Rohingya militants killed eight villagers as they were out foraging, including his brother and oldest son, on August 3.
Following the deaths a build-up of security forces in northern Rakhine sent tensions soaring.
But a smaller and similarly terrified stream of civilians from Rakhine's Buddhist and Hindu communities -- some 11,000 -- have headed in the opposite direction, their lives also upended by neighbour turning on neighbour.
The Mro, a forest-dwelling and mainly Buddhist tribe who live on Myanmar's border with Bangladesh, are among them, fleeing the latest round of violence in which they had played an inadvertent central role.
"Now we have no security," he lamented.
Rakhine, Myanmar's poorest state, has become a crucible of religious hatred focused on the Rohingya, who are reviled and perceived as illegal immigrants in the Buddhist-majority country.
The Rohingya militant group fighting Myanmar's military since last October -- the Arakan Rohingya Salvation Army (ARSA) -- said the coordinated ambushes they launched on August 25 were in response to the fresh security crackdown on their kin.
Now in relative safety his thoughts turned to the village livestock and ripe paddy fields they were forced to abandon.
"There is no one left to feed them, I think our pigs will have died," he said.
Han Thein, an ethnic Rakhine Buddhist, said her village of Khan Thaya was one of the places ambushed by Rohingya militants on August 25.
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