From a religious perspective, it’s like God intended gay relationships to happen. After all, God’s creations are perfect, just like the placement of the male G-spot.
From an evolutionary perspective, maybe it helps reduce frustration from a lack of sex with females and prevents one from offing themselves. Males with an easier-to-arouse male G-spot could then pass on their genes when females become available again.
*thinking cap on* I’m something of a scientist myself. /J