wouldn't you feel guilty if a stranger were to cut themselves stepping on broken glass after you simply covered it over with a tissue hoping to hide that it exists?
skepticism is necessary at this juncture because the general public is so used to being protected they don't know that basic in protecting themselves.
Nobody's trying to hide anything. Scammers and criminals are attracted to anything with money involved, everybody knows that, and Bitcoin is no exception. I think the general public does (or at least, should) understand the importance of protecting themselves, given the number of scams involving fiat currency.
In my experience, people (especially people unfamiliar with e-commerce) are worried about two things when buying things online: "What if they steal my money?" and "What if they steal my identity?" With Bitcoin, the second question disappears completely, which I think is one of it's major selling points. The first question is (at least partly) answered by dealing only with reputable merchants and escrow services, which is what most people try to do anyway when using credit cards online, if only because having to reverse credit card transactions is a pain.