I know you need to use ad homs such as "obsession with removing foreskins" to feel like you are making a point, but I assure you, it's not helping your argument. An attempt to vilify rather than rationally debate the points is noticed. Now if you please, keep it to the topic. Helpful debating hint: I am not the topic.
Now moving on, of the functions you listed, the majority were for protective purposes. Those same purposes are achieved by the wearing of clothing rendering the usefulness of the foreskin void. I also don't care about the size of the foreskin on an adult male. Size of the foreskin does not translate into usefulness.