Yeah, I'll join the chorus.
He hasn't been gone anywhere near long enough to pronounce dead and buried. Barring being poached to other pastures/ref_id by some wily performer ...
Sometimes they get ill ... sometimes they get busy ... sometimes they get laid and/or loved up.
And, like Zuzana said ...
Some guys are addicted.
Some others find actual canoodling/humping also comes with negatives that paying for their virtual fix doesn't. Takes all sorts ... thankfully.