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On the topic of how worthwhile it is to discuss Objectivist philosophy, does anyone actually get involved in Objectivism because of the philosophy? Is the philosophy the starting point for anyone, including Rand? The problem seems to me that most people interested in Objectivism developed their interest as a result of being pissed off at having to pay for a wheelchair ramp for their business, or not being allowed by the zoning board to build a three-story treehouse in their yard, or something comparable.
Myriad
Although it is impossible to answer, except anecdotally (no way to tell if your impression of why most people who are interested in Objectivism developed it is accurate), that is an interesting question.
I shoplifted my first Ayn Rand book when I was a teenager. I think it was 'Capitalism: the Unknown Ideal', but it might have been 'The New Left'. That was a very long time ago.
A lot of it made sense. Among other things, it presented me with the first analysis of why shoplifting was wrong that went beyond 'God doesn't like it' that I'd heard, which prompted me to return the book to the store and nip my shoplifting habit in the bud.
Not initiating force or fraud made sense to me. Accepting the reality of reality as an axiom made sense to me. Allowing people to do what they want as long as they weren't hurting anyone made sense to me. So I read a lot more Rand. Ironically, in the long run, some of the things I didn't agree with her on at the time, I agree with her on now: that it's reasonable to dismiss the notions that God and paranormal phenomomena are real, given the inadequacy of the reasons for believing in them. I would learn skepticism elsewhere.
The philosophy left an impression on me, but one of the things it has a hard time dealing with is natural differences in personality being legitimate, another is confusing terminology (like selfishness being enlightened self interest instead of a willingness to take at the expense of others), and another is lack of recognition of the important role empathy plays in our lives. It has some good, though not necessarily original ideas, but it's incomplete. It would be interesting to see a 'fixed' version of O'ism, but in the final analysis, there are circumstances where I think collective needs trump some individual rights, because there's suffering that I'm not willing to sanction in the name of individuality.