It’s what you’re used to. And it depends what the rostering is like where you are.
Having done both I found long haul much easier. I also know many guys who were at short haul and went to long haul and hated it.
There are always moaners at every single airline claiming how they work harder than anyone else or have the worst conditions etc. Leave then? And find that the next airline they goto has more or less the exact same issues.