To date, I have invested in exactly zero ICO's. Though I have bought some EOS through an exchange. And the reason why I haven't invested into any ICO's is that I do not have the time or energy to research them as thoroughly as you laid out here! Perhaps if someone I respect recommends one to me, I will make the time to do the research and decide if I want to buy in.
You are playing smartly. Don't jump into something you haven't researched unless it costs you nothing.