I like Krav Maga. It is an art of self defense 
It is used by Israel Defense Forces so it certainly has merit
Yes it is. I learnt a few lessons 
Krav Maga combines boxing, wrestling and street fighting.
That is true
But the philosophy emphasizes defensive and offensice moves all at the same time.  That sounds difficult
I like the defensive for self protection  
Yes, KravMaga is known for focusing on real world situations
The Israelis developed it into a weapon
use of his training as a boxer and wrestler while defending the Jewish quarter against fascist groups in Bratislava, Czechoslovakia, during the mid-to-late 1930s. In the late 1940s, following his migration to Israel, he began to provide lessons on combat training to what was to become the IDF.
From the outset, the original concept of Krav Maga was to take the most simple and practical techniques of other fighting styles (originally European boxing, wrestling, and street fighting) and to make them rapidly teachable to
Krav Maga
Krav Maga (; , "lit." "contact combat") is a military self-defence and fighting system developed for the Israel Defense Forces (IDF) and Israeli security forces derived from a combination of techniques sourced from boxing, wrestling, aikido, judo and karate, along with realistic fight training. 
Krav Maga is known for its focus on real-world situations and its extreme efficiency. It was derived from the street-fighting experience of Hungarian-Israeli martial artist Imi Lichtenfeld, who made