Perhaps his childhood sweetheart and baby died in childbirth at the hospital due to negligence... Not that they would bother to mention that.
It goes without saying that someone prepared to build and detonate a bomb in their lap has mental health issues
In fact, it's probably a prerequisite...
Yes, indeed. 
You must be mad to do such an evil thing like build a bomb, let alone go to a women's hospital to set it off where new life has arrived!
Bloody bastard, thank God he died in the attempt!

There you go again... One moment you're telling us that lots of weird and wonderful fringe minorities live lives of constant misery and it is all our fault because we can't possibly have any notion of the mental health issues that they are blessed with...
The next you are busy dismissing the action of a clearly disturbed individual as an act of simple madness.
Whilst that sinks in, consider that much of what most people do, makes little sense to everyone else.
People within the “diversity” are not all suffering from mental health issues, far from it. Those issues can arise though when others torment and degrade them to their face, or online.
So there is a big difference in those that are bad / evil and mad, and those who are simply suffering from life’s pressures, within or outside the “normal” sectors of society. That society does consist, as you touch on, of people who certainly do not think the same as the next person; that makes us human.
Hitler was evil, very bad and a lunatic, which even his generals, with a key example being Erwin Rommel, started to recognise after at least 1942 as his decision making became very erratic.
The man who has just blown himself up outside the women’s hospital was, by all accounts showing no sign of madness. He was just with evil thought that persuaded him to try and do what we THINK was the aim; kill innocents.
These two cases are very different, and again I have great experience in the mental health field, so I do know something about what I am trying to explain. In summary, some people are thoroughly evil, some become evil, others become mentally ill but would not be considered evil, the rest of society is a mixture of balanced and almost off of balanced individuals, which displays the tight rope of life we tread. Those who are Diverse just fall in with the rest of us, and CAN be any of the above!
So that is why I stated what I did, and I hope DG you can understand that. At no stage though to I interject religion - faith - beliefs into the equation, because then it becomes very muddied!