There are an increasing number of JWs who wouldn't know what the doctrines are if you explained it to them. They would think you are making it up (I have personal experience of this). This is more prevelant in JWs who are raised as JWS - they never seem to understand and grasp the main points of the religion.
Yeah - I get the impression, when talking to JWs I know, that they've kind of "boiled it down to the bare essentials"; "The end is sooo near, just look at the world!" (any world event will do), and "We have to go to meetings; board 'the Ark', and try to save others in the field service. And we have to stay away from any source that may somehow have an opposing view to what we already have been taught" . That's pretty much it. Doubts about the org. etc. are pushed aside, since "we're so close; we'll wait on Jehovah". And they seem to be perfectly willing to abandon all family and friends now, and devote all their time and energy to the org., if it will only ensure that they personally will be saved in the future. Pretty egotistical, if you ask me. "Every man/woman for him/herself!"