to write the unwriteable wrong

In school, did they ever try to teach you that all literature can be divided according to a few basic types of conflict: Man vs. Man, Man vs. Nature, Man vs. Society, Man vs. Self (I may be missing some)?

I was trying to apply this to slashfic and I'm not sure it works. I don't know if the system is flawed or if we just need our own types. I propose Man vs. Man, Man vs. Gay, Man vs. Injury on other Man, Men vs. Forces of Evil, Men vs. Supermarket, Men vs. Tentacle, Men (no vs.)