Was starting a Gang War worth it?

There are 2 answers "Yes and No"

Yes! Because you can achieve something like taking someone else's territory. Being the king of the place you want to rule. Being the most powerful individual to ever exist and etc.

No! Because you can destroy so many innocent lives if those innocent people have being involved into that Gang War that you started.

For Alex and Marcus.
They don't care.

The only thing they care is to make the Crack Gang get out of their way. If it means making a misunderstanding between the two Gangs. Marcus decided to steal the Crack Gangs outfit and for Alex to kill the leader of the Ballas together with its Gang Members. This plan was been permitted by their boss for the reason that if this is successful they could might get the Ballas Gang side with them to destroy the Crack Gang and its empire. For Alex he only want's to do this because he was "Bored" yes he was "Bored" for him assassinating missions are becoming boring for him. (Wow! Cocky isn't eh!)