Please read my other posts, especially replied to Bott.
Iran treats Americans a lot better than North Korea and ISIS, but if you enter their territory by land or sea so they will usual detain and hold you for hours, or days or more worse, months, that happened to most countries, including Iran, no matter if it was your fault or not. In Iran's word, they aren't playing BS with Americans and we have no diaplomtic relation after 1979, also we will probably not risking our embassy to be attacked by angry Iranians like they did to British and Saudi embassies.
You know that Saudi is very friendly to US, but they are bad or worse as Iran, but if Saudi monarchy is overthrown via revolution so that's not going to be pretty for our country and of course, we need drilling our own oil or find alternative energy before they screw up the oil price.
If you see North Korea or ISIS so what would you think? They are worse than Iran. The sailors received room with rugs and pillows, that's nicer than most jails and prisons in US, but that could be scary because of tourturing - most Muslim countries have judicial tourturing to force you to confess the truth about crime, but I don't think they will mess with our sailors that risking our agreement with nuclear deal.
It is painful when you claim that I'm sit freely on computer, I have multi-disabilities and don't have opportunities right now, you do have a car and you can drive, that's a lot freedom than stuck at home and tied with computer or smartphone to chat on forum. I don't appreciate the personal attack against me, but I'm being reality about situation (be honest) with Iran, but they aren't serious when compare to NK or ISIS.