A potential, highly likely suicide-mission to ease his own need for appearing good to others is not commendable. This man did not know what he was getting himself into, believing his british citizenship to alieviate him from potential danger. Being british and coming from a stable home means nothing, and he was naive for believing it gave him some kind of ticket from experiencing the cruelties first hand.

he would not have gone, if he knew he would end up getting killed.

You're implying that aid workers are going into dangerous areas to provide help just to appear good and totally naive towards risks.

Nobody knows their exact fate, but that doesn't mean they don't understand risk.  Ofcourse if someone knows their life is certainly going to end then they are not likely to carry themselves to the slaughter, but that is not the case.  The risk is existential, it is far more dangerous than living safely in Britain, but far from certain.  Something like 1 in 1000 aid workers are murdered a year, in the worst case scenarios.

There are plenty of people killed everyday in those places... To somehow believe that just because you come with good i tentions, you wont be one of the unlucky ones is naive... Just because one is white, has a family, comes from another country, those things dont mean squat in war ridden countries. A friend of mines dad went as a journalist, got kidnapped, and haressed and threathened somewhere in middle east, and his wife was hysterical and begging for his return which he was granted... But no one should be surprised or act in disbelief when stuff like this happens... His murder was one of many that occurs every single day on a frequent basis in the middle east. I am not surprised, nor should the press pretend to be, nor any one else. That is my point of view. 

But I personally believe one must be pretty arrogant and full of oneself to go to such places and believe themselves to be even moderately safe.

There are many dying every day in the region, so I'm not surprised either.  But who said they're surprised?  Who said he believed himself to be safe because he's white & British?  Your claims of him being "naive" are annoying because you're being prejudiced.

Then to characterize the violence as islamic is rather appropriate given that islam is, by the morality of a 21st century person a completely barbaric theology.

Yes all Muslims are different in that the ones who commit the violence are the ones who are taking their religion seriously.

How are they taking their religion seriously when they aren't even following the basic rules of said religion?

That the thing about following what is essentialy an extension of a bronze age mythology, it contains many rules and passages that are contradictory to each other and loopholes through which these acts of violence are allowed and encouraged.

But you can hardly blame the people who wrote the Quran can you,given that they are only human.