The root of the 'nice guy' problem
The 'nice guy' simply takes the conventional morality of altruism, the code of self-sacrifice, more seriously than other men do. The problem is, life requires self-assertion. Even basic survival itself requires enough selfishness to acquire food and water. The pursuit of romance and sex, too, requires self-assertion.
But, altruism has been promoted since the beginning of history. So, why has the 'nice guy' problem become so much worse now? The answer is that the culture has become more consistently altruistic in recent decades, one major manifestation being the rise of feminism (it is ironic that feminists rage against the 'nice guys' whom they have helped to create).
A typical feminist ad-hominem fallacy against 'nice guys'. Anything to avoid discussing substantive questions. And, by the way, not very 'nice' of the feminists, is it?
Why the 'nice guy' controversy infuriates women
The 'nice guy' is unattractive to women because of his passivity, and, yet, he is the embodiment of the morality that almost everyone was raised to believe. As such, women's disgust towards 'nice guys' makes women feel insecure in their world-view and indeed very guilty, which leads to anger.
"Did you just say the 'n'-word?"
The attempts to rationalize the disgust against 'nice guys'
One common claim is that 'nice guys' aren't really nice, because, if they were really nice, they would not expect anything in return for their niceness. This, indeed, is true, according to conventional morality. But, no one is really nice, apart from any person aiming for immediate suicide. Remember: even basic survival requires selfishness. But, since there is a spectrum of niceness, women should surely prefer the 'nice guy' as the best alternative to celibacy. The fact that they don't illustrates the fact that this is just an attempt to rationalize the contradiction between their ethics and their sexual desires.
Another claim is that 'nice guys' believe that 'niceness' should be enough to earn a woman's affections. Even if they did believe that, the question would still arise, why is 'niceness' such a turn-off that cheaters, rapists, murderers et al have less trouble winning women's affections than 'nice guys' do? Whatever the lack of 'niceness', real or imagined, of the 'nice guys', will anyone dare to claim that the 'nice guy' is more evil than the rapist or the murderer?
This murderer got female attention after he stopped whining and started killing. I wish that were a sick joke and not the truth.
The solution to the 'nice guy' problem
The solution is the rejection of the false morality of altruism and the teaching of the true morality of selfishness, which means doing what is objectively in one's self-interest, neither sacrificing others to oneself nor oneself to others. The altruists tell us (with devastating effect, as in the above example) that that is not possible: either one tolerates being murdered, assaulted or cheated on, or one murders, assaults or cheats, right? Wrong, of course.
In a rational world, the more selfish men would receive more romantic interest, and, even in this irrational world, I, as a truly selfish man, receive plenty of romantic interest. The trouble, in fact, is finding a woman worthy of reciprocation, in other words a truly selfish woman.