That's a very interesting list.
First: because this site has a very clear bias, and it's presentation of attacks is a bit deceptive. It doesn't state who is behind the attacks.
There are however some pretty clear inferences that can be drawn.
Everyone of those attacks occurs in a predominately third world country with limited to no real democratic institutions and a history (or occuring currently) several or all of the following: colonialism, foreign occupations, civil unrest/civil war, artificial borders forcing disparate peoples into one country, supression of minorities and rights, corruption, poverty, and a big gulf between the wealthy and the poor. Almost all of those countries are predominately Muslim as well so there is no way (in this list) to determine with the terrorists are Islamists, nationalists of one variety or another, local warlords vying for regional control through terror or any of a group of activists seeking to make a political statement through terror or the use of religion.
Somalia, Afghanistan, and Iraq are all in a state of war - it is impossible to state whether something is the product of "terrorists" or of war and weak or nonexistant government. What's left? It's impossible to verify the accuracy - you have countries that are undergoing regional conflicts, you have what appears to be the average criminal shooting someone (not to different from someone who bombs an abortion clinic) and aside from the perpetrator being Islamic (no surprise in a country with predominately Islamic population) there is no information. Virtually no attacks occurred in prosperous third world countries and countries with strong democratic institutions.
What is clear however, is that this site appears to be where your "40 years" of studying and "living" Islam seems to spring from.
Of course the knee-jerk reaction is to blame Islam.