Masturbation is an implosion of sexual pleasure that focuses a guy further and further into himself. Since the genuine need for interpersonal intimacy cannot be met by self-seeking sexual activity, the hunger for genuine intimacy is never fulfilled. But a “better than nothing” attitude sends him right back to the computer for that gentle stroking, which drives him further within himself and leaves hm feeling emptier still. And so it goes.
It’s like being really thirsty and being handed a glass of salt water. The glass of water looks like should slake your thirst, but taking a sip of salt water would be awful, and drinking a whole glass would be disastrous. Similarly, masturbation can’t slake that loneliness, and the insecurity and isolation simply tighten their grip around a man’s heart.