Why do you use the Martyr?

In my first games the martyr seemed very powerful and I did hire him if I had the chance. Now, being wiser, I never do. He can be useful if you want to blow up your own mine or maybe...maybe...if you manage to kill someone off with it. Most of the time he is more of a risk than anything else.
I see now many new players hiring the martyr just like I did at the beginning:
They launch him on my queen and think they have won the game. It will only cost me one driller to show them otherwise.
They move the martyr to some other outpost and I can intercept him with a pirate or at their outpost at just the right time to blow all the drillers to bubbles.
More skillful players might think they can use him to kill me with a combo of navigator/xxx/martyr...but how is this better then navigator/xxx/assassin? You even get 2 assassins for one martyr and if something goes wrong you are not blown to pieces...and if you succeed with your assassin you can even capture the outposts for further use and go hunt the next player with the same or second assassin...
the fun factor is high I agree...he just has a cool vibe around him...you could even do some tricks with your sonar range...butt in case of value the martyr it just not worth it to my mind!
I see now many new players hiring the martyr just like I did at the beginning:
They launch him on my queen and think they have won the game. It will only cost me one driller to show them otherwise.
They move the martyr to some other outpost and I can intercept him with a pirate or at their outpost at just the right time to blow all the drillers to bubbles.
More skillful players might think they can use him to kill me with a combo of navigator/xxx/martyr...but how is this better then navigator/xxx/assassin? You even get 2 assassins for one martyr and if something goes wrong you are not blown to pieces...and if you succeed with your assassin you can even capture the outposts for further use and go hunt the next player with the same or second assassin...
the fun factor is high I agree...he just has a cool vibe around him...you could even do some tricks with your sonar range...butt in case of value the martyr it just not worth it to my mind!