"Elves have few children, as a rule ... They are soon preoccupied with other pleasures; their libido wanes and they focus their interests elsewhere, such as the arts. Nonetheless, they take great delight in the union of love, and they cherish the days of bearing and raising children as the happiest times of their lives." (J.R.R. Tolkien, Laws & Customs Among the Eldar)
I can totaly see this. The Elves so used to seeing their king so in control and almost stoic, hide in fear when they see him practically skipping through the city and shouting to anyone within earshot that his son is born. He will relive his embarrisment at Legolas's wedding one day, half drunk and cherry red.