There are good, rational reasons to be friendly in the short term.
The rational reason to be unfriendly in the long term is that sufficiently advanced optimizing processes are powerful, and outcomes that maximize the utility of one agent are not likely to also maximize the utility of other agents with different goals.
There are good, rational reasons to be friendly in the short term.
The rational reason to be unfriendly in the long term is that sufficiently advanced optimizing processes are powerful, and outcomes that maximize the utility of one agent are not likely to also maximize the utility of other agents with different goals.