Why men actually are entitled to sex
Firstly, to IT and lurkers, don't think that my opinion is the objective opinion of the community, we can make up our own minds, we aren't a monolithic hivemind
It's a common thing to hear in the incel community, that "we don't actually think we are entitled to sex", but I'd make the case that men actually are entitled to sex, and more specifically reproduction.
There are mainly two reasons for the existence of societies, for men, and that is 1. to decrease the mortality rate of the members, and prolong lifespans, and 2. to decrease the extreme competitiveness of reproduction, and to streamline reproduction and access to women(in pre-historic tribal societies, about 1 man reproduced for every 17 women)
When society fails to provide either of these, it begins to break down (such as, or like we demonstrate, the popularity of the NEET lifestyle among incel communities)
When society does not safeguard the access of women that men have, and as, inevitably following from that, inceldom grows (as it is doing, just look at the celibacy statistics), productivity decreases, crime goes up, and ultimately, society begins to break down.
Taking this into account, it's not so crazy to believe anymore that society, be it a group, tribe, city, country or interplanetary colony, should reward men sexually (just like we are paid with money)based on their contribution to that community/society