1. Nothing can replace sex, love, and intimacy in a man's life
Strongly agree, friendships cannot do that because as a friend you are always second-class when it comes to spending time with somebody (you will always be given a lesser priority than a romantic partner because blood is thicker than water and one relationship results in marriage/children while the other is purely platonic and can be dropped at any seconds), pets can also do nothing about the loneliness because they cannot talk with you and everything you see in them is ultimately just what you project onto them. A romantic partner is absolutely necessary.
2. Being a virgin as an adult is the same as being a loser
Sex/romantic fulfillment is an inherent need of people, therefore people mock those who cannot attain it, it is a differentiating factor for the worth of people in our so(y)ciety and has always been, look at Roman poets that mocked the dick size of politicians they despised (Manurra=dicklet) or in Greece where they made fun of people for masturbating (where the archetype of the "Coomer" first arose). Nothing about that is new, but in our so(y)ciety it is so amplified that you cannot escape it: Every TV show, every movie, every ad deals with sexuality - because it is (or at least should be) an integral thing that unifies all people, the common denominator. No wonder why in every political debates there are sexually-based insults used: The left-winger calls the right-winger an incel or a limp-dicked loser, the right-winger calls the left-winger a cuck which is per definition an unappealing man that needs the help of other partners to fully sexually satisfy a woman which is enormously humiliating. The so(y)ciety is like an hourglass that amplifies your inherent biological suffering due to unfulfilled basal desires. Sex with a whore cannot substitute for it because you have to pay to be accepted.
3. Promiscuity is immoral
Strongly agree, all countries had laws against them. Adulterers in my country where once bound to trees and then eaten by animals. Promiscuity doesn't imply more sex (look at the stats, with "free love" -which is in itself an oxymoron- the virginity rate and the rate of sexless men almost exponentially rose with time), it's just more exclusive (one guy fucks dozens of women per week while the other rots). To each their own and every man gets their own match (same in terms of physical/mental health, looks, wealth and race) is a fundamentally good idea and was the premise of so(y)ciety before the sexual revolution. Even then we wouldn't have gotten a prom queen, but certainly a woman that reflects our own abilities/traits. Now a disabled woman hates disabled men, now an Asian woman says "Whitu cockru onry", etc. Their should be consequences for decisions and therefore the "Stick dick in, stick dick out"-fuckery should be frowned upon.
