You'd think that by now westerners would learn that the only viable excuse to visit Iran is as part of an invasion force.
Tens of thousands of tourists visit Iran every year with no problems and come back with stories of how friendly the people were and how beautiful the country's attractions are. This pair of Germans, or those hikers who even Western sources think pretty shady, are not enough to completely discourage visiting the country.
It's pretty obvious that those hikers were innocent and just got lost...they had the misfortune of getting lost close to the border of a barbaric, illegitimate, totalitarian, and fanatical regime. Probably shouldn't have been in that region of the world without an armed guard in the first place, but they got more than they lesson they deserved.
Well, have fun and don't come crying to the rest of us when you're being tortured in an Iranian prison...maybe you could plan a layover in North Korea to round out your trip.