I can understand a) this will diversify their portfolio b) increase their risk negligibly c) increase their long term positive variance appreciably. But how o

I can understand a) this will diversify their portfolio b) increase their risk negligibly c) increase their long term positive variance appreciably. But how on earth will participating in YC help? its not some damn webapp or incrementalizable b2c/b2b product. Some things also don't have a natural exit, even if the biz outcomes are grand and/or interesting. seriously, convince me its worth my time to apply even though I don't want investors. please. (I know many folks who did YC and are happy with it, I just don't see how it'd help in the domains I do work in.)