I used to feel the same way a few years ago when I would come across an N95 user who had no idea what their phone was capable of as far as added apps etc. Then I came to realize that it doesn't really matter as long as the users needs are met (mms, voice dial, etc)
The N900 on the other hand I would really only recommend to an advanced user, its not a good basic phone but definitely one of the best MID's on the market. If your use case is mobile phone there is definitely a better choice.