You should have a will even if you stay home. And a living will in case you are vegetating and the plug needs to be pulled.
Most people in Iran know there are a bunch of assholes running things there just like there are here. Daily life for most people there consists mostly of mundane things like colored pencils.
Travel requires treating irrational fears as irrational. If you want to go, you can find a way. Your life will be different afterwards because that's what any travel does.
The ways in which people change from travel is why Americans have been banned from Cuba for sixty years and Iran for forty.
It's possible, sure. But the risk of arbitrary detention would make it impossible to enjoy. The state department currently lists Iran as "Level 4: Do not travel", and suggests you have a will in order if you do [0]. There was a brief moment towards the end of the Obama era where it seemed things may have been thawing, but with the Soleimani assassination I don't have much hope for the future in that regard.
[0] https://travel.state.gov/content/travel/en/traveladvisories/...