i don't consider myself to be very tech savvy or it knowledgable, but that being said. I absolutely ADORE my n900, ;P I've only ever needed the basic telephony functions the n900 has ( extra functionality would be great, but not really necessary for me ) but the range of actual USEFUL apps suits my every need, and has gotten me interested in things i wouldn't have thought of doing on my phone before. Web/internet conenctivity ( like browsing,im, rss, blah blah blah etc ) functions are awesome. I agree that the phone needs a little self tweaking out of the box, but that just means i have a highly unique experience with my phone, and no other n900 out there looks exactly like it ( ui wise i mean )
Sure some research and reading is required to perform these tweaks/adjustments, but if someone like me can do it, then the only excuse a 'normal' user has for saying that it requires too much work/ is not user friendly i can think of is that they're lazy or they just don't care about extra functionality.