I agree, we should study the doctrines first and foremost. But to be honest, I personally am not overly interested. I have the Gospel which is the way the life the truth.
If God puts me in a place to witness to Moslems, that is good.
I mean, thats fine, if you dont feel called to do it and feel the desire to help other people. I brought this up in another thread just now actually, about Mormonism. I have a close friend who feels the way I do about helping others come out of Islam about Mormonism, the other day we watched a film about it together. And I have even learned of a few good arguments against Mormonism : p And Im grateful for that.
It never hurts to learn a few things in case you ever have that conversation. I post like once a week about how allah claims no one can change his word, that he gave us the Gospel, and that Christians are commanded to judge by it : p I learned that argument from others and am sharing what I learned cuz its a good argument : p
Theres no doubt that Muhammad was a false prophet, I absolutely want everyone to know about it.