Well they say 'see not the preacher but look at what he preaches'.
Second, let us analyse what Dr Zakir Naik says and if it is with proofs and references which can be checked particularly when he gives the chapter and verse reference nos. Pl give a try before we conclude or close our eyes/ ears or for that matter brain.
I am sure it should help and would be very happy to know if what he says is not based on fact.